A business student conducts an OLS regression analysis in excel (with usual defaults) with demand for strawberries (in 1000 units) as the dependent and price (in dollars) as an independent variable. The OLS regression line is given by y= 9 − 3x. If the pvalue of the intercept coefficient is 0 and the pvalue of the slope coefficient is 2% & If the standard error of the intercept coefficient is 6 and the standard error of the slope coefficient is 1; the true slope will be ______ to/from the estimated slope and the true intercept will be ________ to/from the estimated intercept.

Group of answer choices

equal, equal

different, equal

equal, different

different, different

Answers

Answer 1

The true intercept and slope are both different from the estimated values based on statistical significance.

The p-value of the intercept coefficient and that of the slope coefficients are 0 and 0.02(2%) respectively. This means that they are statistically significant. Thus we can infer that the true intercept and slope is not equal to 0.

The standard error of the intercept coefficient is 6, which means that the true intercept is likely to be within 6 units of the estimated intercept. The standard error of the slope coefficient is 1, which means that the true slope is likely to be within 1 unit of the estimated slope.

Therefore, the true slope and intercept will be different from the estimated slope and intercept.

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Related Questions

Solve the system by graphing
y = -3/4x + 6
y = 2x - 5

Answers

Answer:

X= 4. Y = 3.

Step-by-step explanation:

If you have a graphing calculator, put the first equation into Y1. And second equation into Y2. Then, find the intersection of the two equations. That's how you find your answer.

How many days in April

Answers

Answer:

There are 30 days according to the Georgian calender of the month of april.

Step-by-step explanation:

3/5 + 7/8 + 3/10
please help

Answers

Answer:

soln,

3/5+7/8+3/10

3×8/5×8+7×5/8×5+3×4/10×4

24/40+35/40+12/40

24+35+12/40

71/40

Please hurryyyyy !!!! What's the slope and y intercept of 4y = 2x - 12

Answers

Answer:

slop is 0.5 and intercept of y is -3

Answer:

½ is the slope,-3 is the intercept

Step-by-step explanation:

now to find the slope and intercept

we use the equation,

y=mx + c

where m is the slope

and c is the y intercept

so we compare 4y=2x-12 to the equation

but we first have to make y the subject of the equation in the question – 4y is already the subject –

y=2x-12/4

y=2x/4 -3

comparing...

we see that m is 2/4=½ c= -3

17. a type of bacteria doubles in population every 2 hours. given that there were approximately 5 bacteria to start with, how many bacteria will there be in 10 hours?

Answers

There will be approximately 320 bacteria in 10 hours.

To determine the number of bacteria in 10 hours, we need to calculate the number of doubling cycles that occur within that time period.

Since the bacteria population doubles every 2 hours, in 10 hours, there will be 10/2 = 5 doubling cycles.

Starting with approximately 5 bacteria, each doubling cycle will result in the population doubling. Therefore, the number of bacteria after 5 doubling cycles can be calculated as follows

5 bacteria * (2^5) = 5 * 32 = 160

Hence, there will be approximately 160 bacteria after 5 doubling cycles or after 10 hours.

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The graph of which function(s) will contain the point (4, 12)?

y = x + 8
y = 3x
y = 2x
y = x + 6

(one or more than one)

Answers

Answer:

y=3x

Step-by-step explanation:

A rectangular prism has a volume of 600 cubic inches lf the height of the prism is 5 inches and the width is 10 inches what is the length of the prism? Enter your answer in the box.​

Answers

Answer:

3 inches

Step-by-step explanation:

got it right on edg

Suppose that 5% of athletes at a certain university are using steroids or other
performance-enhancing drugs (PEDs). Unfortunately, the tests used to detect PEDs
aren't perfect. Suppose that 3% of athletes who are not using PEDs will test positive
and be accused of using PEDs. Meanwhile, 1% of athletes who are using PEDs will test
negative and escape detection. Calculate the probability that a randomly selected
athlete will test positive.

Answers

Answer:

There is a 8.11% of any randomly selected athlete to test positive.

Step-by-step explanation:

To make it easier, let's assume there are 100 athletes

5/100 have it

3/95 do not have it, but will test positive

1% of the 5 athletes who are using PEDs = 0.05%

This means that 4.95/100 will test positive

3/95 = 3.16%

(rounded, if you need a more precise answer, it's 3.1578947368421053)

3.16% + 4.95% = 8.11%

Can i pass 7th grade with 3 Fs?

Answers

Answer:

Depends on the state you’re from

Step-by-step explanation:

Answer:

Yes you can! Grades from middle school don't matter when you get to high school. But try to get those grades up!

i’m lost on this help would be nice

Answers

Answer:

3x - 4 = 14

+4. +4

3x = 18

÷3. ÷3

x = 6

Find the cross product a x b where a = (3, -3, -2) and b = (3,-1,-2). ахь Find the cross product cx d where c = (1, -2,-2) and d=(-5,3,-1).

Answers

The cross product of vector c and d is equal to (-4,9,13).

The cross product of two vectors a and b in three-dimensional space is a vector that is perpendicular to both a and b and thus normal to the plane containing them. Here, we have to find the cross product of two given vectors. The given vectors are:a = (3, -3, -2) and b = (3, -1, -2)  So, a x b = (4,0,6).The second one is given as: c = (1, -2,-2) and d=(-5,3,-1).

A vector in mathematics is a quantity that not only expresses magnitude but also motion or position of an object in relation to another point or object. Euclidean vector, geometric vector, and spatial vector are other names for it.

In mathematics, a vector's magnitude is defined as the length of a segment of a directed line, and the vector's direction is indicated by the angle at which the vector is inclined.

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Find the basis for the kernel and imagine of this transformation. Let T : P₂ → R where T(p(x)) = p(1). Find a or the kernel and image of this transformation.

Answers

The basis for Ker(T) is {}, and the basis for Im(T) is {1}.

Since, The kernel of T, denoted Ker(T), is the set of all elements in P₂ that are mapped to zero in R by T.

In other words, Ker(T) is the set of all polynomials in P₂ such that

T(p(x)) = p(1) = 0.

Hence, To find the kernel, we need to solve the equation p(1) = 0.

Since, The only polynomial that satisfies this condition is p(x) = 0.

Therefore, Ker(T) = {0}.

Now, the image of T.

The image of T is the set of all elements in R that are mapped to by some element in P₂ under T.

In other words, Im(T) is the set of all possible values of p(1) for all polynomials p(x) in P₂.

Some example: - If p(x) = 1 + 2x + x², then p(1) = 1 + 2 + 1 = 4.

So, we can see that Im(T) is the set of all real numbers.

Hence, the basis for the kernel and image of T.

Since Ker(T) = {0}, the basis for the kernel is the empty set, denoted by {}.

Since Im(T) is the set of all real numbers, any non-zero real number can be expressed as a scalar multiple of any other non-zero real number.

Therefore, the basis for Ker(T) is {}, and the basis for Im(T) is {1}.

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¿Cuáles son los números primos entre 2 y 20?

Answers

Answer:

2 3 5 7

Step-by-step explanation:

Caitlin ate 20 pieces of candy on Monday and 17 pieces on Tuesday. by what percent did she decrease her candy intake

Answers

She decreased her candy intake by 15%

According to a 2014 poll by the American Academy of Ophthalmology, Americans break down like this when it comes to eye color:

• Brown eyes: 45 %

• Blue eyes: 27 %

• Hazel eyes: 18%

• Green eyes: 9%

• Other: 1%

Consider a random group of 20 American people. Let a random variable X be the number of Americans in this group with green eyes.

(a) Argue that this is a binomial experiment.

(b) Find the probability that

i. None have green eyes

ii. Nine have green eyes

iii. At most three have green eyes

iv. At least four have green eyes

v. If four people out of twenty have green eyes. Is it unusual?

(c) What is the mean and standard deviation of this distribution?

Answers

This is a binomial experiment because it meets all the necessary conditions: a fixed number of trials (20 people in the group), independence of each trial (assuming eye color is independent), two possible outcomes (green eyes or not), a constant probability of success (9% for having green eyes), and the random variable representing the count of successes (number of Americans in the group with green eyes, denoted as X).

To argue that this is a binomial experiment, we need to check if the following conditions are met:

1. The experiment consists of a fixed number of trials: In this case, we are considering a fixed number of trials equal to 20, as we have a random group of 20 American people.

2. Each trial is independent: We assume that the eye color of each person in the group is independent of the others.

3. There are only two possible outcomes for each trial: The outcomes are either having green eyes or not having green eyes.

4. The probability of success is constant for each trial: The probability of an American having green eyes is fixed at 9% for each individual in the population.

5. The random variable X represents the count of successes: In this case, X represents the number of Americans in the group with green eyes.

Since all these conditions are satisfied, we can conclude that this is a binomial experiment.

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Central Airlines claims that the median price of a round-trip ticket from Chicago, Illinois, to Jackson Hole, Wyoming, is $605. This claim is being challenged by the Association of Travel Agents, who believe the median price is less than $605. A random sample of 25 round-trip tickets from Chicago to Jackson Hole revealed 11 tickets were below $605. None of the tickets was exactly $605. State the null and alternate hypotheses.

Answers

Null hypothesis is that the median price of a round-trip ticket from Chicago, Illinois, to Jackson Hole, Wyoming is $605. Alternative hypothesis is that the median price of a round-trip ticket from Chicago, Illinois, to Jackson Hole, Wyoming is less than $605.

The median price of a round-trip ticket from Chicago, Illinois, to Jackson Hole, Wyoming is $605.

The median price of a round-trip ticket from Chicago, Illinois, to Jackson Hole, Wyoming is less than $605.As per the given question, Central Airlines claims that the median price of a round-trip ticket from Chicago, Illinois, to Jackson Hole, Wyoming is $605. But, this claim is being challenged by the Association of Travel Agents, who believes that the median price is less than $605. Hence, we need to test whether the median price is less than $605 or not.Hence,Null hypothesis is that the median price of a round-trip ticket from Chicago, Illinois, to Jackson Hole, Wyoming is $605. Alternative hypothesis is that the median price of a round-trip ticket from Chicago, Illinois, to Jackson Hole, Wyoming is less than $605.

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Write a function trapezium_integrator(f, start, end, num_traps) that uses the Trapezium Rule to evaluate the integral ∫endstartf(x)dx where f, start, and end are defined in the formula above, and num_traps is the number of trapeziums that the integration interval should be divided into.

Notes:

You may assume num_traps >= 1
Hint: This should be a simple modification of your code from the last question.
We are still expecting you to compute the width of each trapezium and then use a for loop to solve this problem, iterating over the trapeziums to sum their areas. A more efficient approach, using numpy and avoiding any explicit loops, is the topic of one of the challenge questions.

Answers

The function trapezium_integrator uses the Trapezium Rule to approximate the value of a definite integral. It takes four parameters: f, which represents the function to be integrated, start and end, which specify the interval of integration, and num_traps, the number of trapeziums used to approximate the integral.

In the Trapezium Rule, the interval of integration is divided into multiple trapeziums of equal width. The area of each trapezium is calculated as the sum of the lengths of its parallel sides divided by 2, multiplied by its height (the difference between the function values at the two endpoints of the trapezium). The areas of all trapeziums are then summed to obtain an approximation of the integral.

The function calculates the width of each trapezium by dividing the interval length by the number of trapeziums. It then uses a for loop to iterate over the trapeziums, accumulating their areas. The final result is returned as the approximation of the integral.

By dividing the interval into smaller trapeziums, the Trapezium Rule provides a reasonably accurate estimate of the integral. However, for highly oscillatory or irregular functions, a large number of trapeziums may be required to achieve sufficient accuracy. In such cases, more sophisticated numerical integration methods may be more appropriate.

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ABM Services paid a $4.15 annual dividend on a day it closed at a price of $54 per share. What
was the yield?

Answers

Answer:

the yield is 7.68%

Step-by-step explanation:

The calculation of the yield is given  below:

we know that

Yield is

= Annual dividend ÷ Price per share

= $4.15 ÷ $54

= 7.68%

Here we divide the annual dividend by the price per share in order to determine the yield  

hence, the yield is 7.68%  

And, the same would be considered

Find the area bounded by the curves y= and y= x2 Round the answer to two decimal places. Question 4 3 pts A company's marginal cost function is given by MC(x)= VX + 30 Find the total cost for making the first 10 units.

Answers

The total area of the regions between the curves is 1/3 square units

The total cost for making the first 10 units is 7.79

Calculating the total area of the regions between the curves

From the question, we have the following parameters that can be used in our computation:

y = √x and y = x²

With the use of graphs, the curves intersect at

x = 0 and x = 1

So, the area of the regions between the curves is

Area = ∫x² - √x

Integrate

[tex]Area = \frac{x^3}{3} - \frac{2x^\frac32}{3}[/tex]

Recall that x = 0 and x = 1

So, we have

[tex]Area = (\frac{0^3}{3} - \frac{2 * 0^\frac32}{3}) - (\frac{1^3}{3} - \frac{2 * 1^\frac32}{3} )[/tex]

Evaluate

Area =  0 + 1/3

Evaluate

Area =  1/3

Hence, the total area of the regions between the curves is 1/3 square units

Calculating the total cost

Given that

MC(x) = √(x + 30)

Integrate to calculate the cost function

So, we have

[tex]C(x) = \frac{2}{3}(x + 30)^\frac23[/tex]

For the first 10, x = 10

So, we have

[tex]C(10) = \frac{2}{3}(10 + 30)^\frac23[/tex]

Evaluate

C(10) = 7.79

Hence, the total cost for making the first 10 units is 7.79

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A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s2 for g. Use 1000 kg/m3 as the weight density of water.) 8 m Step 1 A layer of water Ax m thick which lies x m above the bottom of the tank will be rectangular with length 8 m Using similar triangles, we can see that it will have width 8r 8 m Step 2 The mass of the layer of water is approximately equal to its density (1000 kg/m3) times its approximate volume x Ax(1000) kg m=

Answers

The work required to pump the water out of the spout is 200000.64 J.

Given, Length of the tank = 8 m

Density of water = 1000 kg/m3

The work required to pump the water out of the spout can be calculated as follows:

Step 1: Consider a layer of water 'dx' thick at a height of 'x' meter above the bottom of the tank.

The volume of this layer is given by,V = Area × height= (8 × x) × dx= 8x dx

The mass of this layer is given by,m = density × volume= 1000 × 8x dx= 8000x dx

The force required to lift this layer of water is given by, F = mg= 8000x dx × 9.8= 78400x dx

Step 2: To find the work done, we need to multiply the force by the distance moved.

The distance moved by this layer of water is given by d, where d = (8 - x).

Therefore, the work done in moving this layer of water is given by, dW = F × d= 78400x dx × (8 - x)= 627200x dx - 78400x² dx

Step 3: The total work done in pumping out all the water is given by the integral of dW from x = 0 to x = 8.

That is,W = ∫dW = ∫₀⁸ (627200x dx - 78400x² dx)= [313600x² - 261333.33x³]₀⁸= 200000.64 J

Therefore, the work required to pump the water out of the spout is 200000.64 J.

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What is the simplified form of the expression below?
3+ 4i
4 - 2i

Answers

Answer:

7 + 2i is the simplified form

Step-by-step explanation:

CORRECT ANSWER GETS BRAINLIEST
Explain how you would apply exponent rules to evaluate for the value of (x³/x)² if x =1/2?

Answers

Answer:

1/16

Step-by-step explanation:

Picture is attached. The quickest way is to simplify BEFORE plugging in x = 1/2

Find the median of the data.

93,81,94,71,89,92,94,99

Answers

Answer: 92.5

So to find median all we have to do is rearange it from low - high and get the middle number

71  81  89  92  93  94  94  99

So take this and you know the middle is right in between 92 and 93

71  81  89  92      |      93  94  94  99

All you have to do then is take the mean of 92 and 93 (so do [92+93]/2)

Answer is 92.5

Can someone help me on this

Answers

Answer:

Y = 10 I believe

Step-by-step explanation:

To solve this we need to find what number, times 6, equals 18 - it's fairly easy to find the answer is three.

So what, minus seven, equals 3?

44% of what number is 400?

Answers

Answer:

909.09

Step-by-step explanation:

400 divided by 44% is about 909.09.

909 !!!!!!!!!!!!!!!!!!!!!

1.02 1.05 1.08 1.00 1.00 1.06 1.08 1.01 1.04 1.07 1,00 kg Does this support the hypothesis, at 5%, that the mean weight for the whole batch is over 1.00 kg? 7.4 The expected lifetime of electric bulbs produced by a given process was 1500 hours. To test a new batch a sample of 10 was taken. This showed a mean lifetime of 1455 hours. The standard deviation of the production is known to still be 90 hours. Test the hypothesis, at 1% significance, that the mean lifetime of the electric light bulbs has not changed. 7.5 A sleeping drug and a neutral control were tested in turn on a random sample of 10 patients in a hospital. The data below represent the differences between the number of hours sleep under the drug and the neutral control for each patient: 2.0 0.2 -0.4 0.3 0.7 1.2 0.6 1.8 -0.2 1.0 hours Test, at 5%, the hypothesis that the drug would give more hours sleep on average than the control for all the patients in the hospital. 7.6 A coin is suspected of being biased. It is tossed 200 times and 114 heads occur. Carry out a hypothesis test to see whether the coin is indeed biased at 1% significance for anle of sight employees both?

Answers

1.02 1.05 1.08 1.00 1.00 1.06 1.08 1.01 1.04 1.07 1,00 kg: To test the hypothesis, at 5% significance, that the mean weight for the whole batch is over 1.00 kg, we can perform a one-sample t-test. The null hypothesis (H0) assumes that the mean weight is 1.00 kg, while the alternative hypothesis (H1) assumes that the mean weight is greater than 1.00 kg. By calculating the sample mean, sample standard deviation, and the test statistic, we can compare it with the critical value to determine if there is sufficient evidence to support the alternative hypothesis.

7.4: To test the hypothesis, at 1% significance, that the mean lifetime of electric light bulbs has not changed, we can use a one-sample t-test. The null hypothesis (H0) assumes that the mean lifetime is 1500 hours, while the alternative hypothesis (H1) assumes that the mean lifetime is different from 1500 hours. By calculating the sample mean, known standard deviation, and the test statistic, we can compare it with the critical value to determine if there is enough evidence to reject the null hypothesis.

7.5: To test the hypothesis, at 5% significance, that the drug gives more hours of sleep on average than the control for all patients in the hospital, we can perform a one-sample t-test. The null hypothesis (H0) assumes that there is no difference in the mean hours of sleep between the drug and the control, while the alternative hypothesis (H1) assumes that the drug provides more hours of sleep on average. By calculating the sample mean, sample standard deviation, and the test statistic, we can compare it with the critical value to determine if there is sufficient evidence to support the alternative hypothesis.

7.6: To test the hypothesis, at 1% significance, that the coin is biased, we can use a binomial test. The null hypothesis (H0) assumes that the coin is unbiased (probability of heads = 0.5), while the alternative hypothesis (H1) assumes that the coin is biased. By calculating the number of heads observed, the expected number of heads under the null hypothesis, and the test statistic, we can compare it with the critical value to determine if there is enough evidence to reject the null hypothesis and conclude that the coin is indeed biased.

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Methods to rid a model of multicollinearity include:

Answers

Methods to rid a model of multicollinearity include:  Include determination,Collection of data,Variable change,Regression ridge

Multicollinearity in a model can be addressed in a number of ways, including:

Include determination: Eliminating at least one connected factors can assist with mitigating multicollinearity. Stepwise regression or LASSO regression can be used to select the most important features by analyzing the correlation matrix.

Collection of data: By introducing variation in the predictors, more diverse and independent data can help reduce multicollinearity. Expanding test size can likewise help in relieving multicollinearity impacts.

Variable change: Multicollinearity can be reduced by transforming variables using centering, standardization, or power or logarithmic transformations. These changes change the scale or type of the factors, making them less associated.

Regression ridge: By adding a penalty term to the least squares estimation, ridge regression reduces the impact of multicollinearity and reduces the coefficients. This regularization method balances out the appraisals and works on model execution.

PCA, or Principal Component Analysis,: PCA can be used to generate uncorrelated linear combinations of the starting variables. These new factors, known as head parts, can be utilized as indicators in the model, successfully lessening multicollinearity.

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At a school play, an elementary school is accepting donations for a toy drive. An average donation of $8 per person is anticipated. The cost of the set design and costumes is $750, advertising in a local newspaper is $125, and posters to announce the concert cost is $89.

HELP HELP MEEEEE !!!!!

Answers

Answer:

sorry

Step-by-step explanation:

A password is required to log into a system that only recognizes numbers and letters of the alphabet (not case sensitive). You want to create a password using 5 numbers or letters, but cannot reuse any of them. How many different passwords are possible?

Answers

There are 60,466,176 possible passwords for a system that acknowledges both digits and letters of the alphabet (and does not differentiate between uppercase and lowercase letters) and requires a 5-character password with no repeated characters.

For the purpose of computing the total number of possible passwords, it is necessary to take into account the number of options available for each character position. Within the constraints of the system, there are 10 different options for each number (0-9) and 26 different options for each letter (A-Z).

There are a total of 36 options available to us when it comes to the first character position (26 letters and 10 numerals). We are left with 35 options for the second place because we are unable to recycle any of the characters (36 options, minus the one that has already been used). In a similar fashion, we have 34 options for the third position, 33 options for the fourth position, and 32 options for the fifth position.

To calculate the total number of possible passwords, we multiply the number of choices for each position together: 36 * 35 * 34 * 33 * 32 = 60,466,176. Given the parameters of this system, there are consequently sixty-four million, four hundred sixty-six thousand, one hundred seventy-seven different passwords that might be used.

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Kai's mom gave him $25 to spend at the book fair. Kai wants to buy as many books as he can. The
cost of each book is $3. He also wants to buy one poster for $2. Write an inequality to show how
many books he can buy. Highlight your inequality in green. Then,solve the inequality

Answers

Answer:

7 books

Step-by-step explanation:

i cant write it in an equaction but basically 25 - 2 = 23

then 3 x 7 = 21 so he can only buy 7 books and he'll have 2 dollars left

3x + 2 = 25. x= 7

3x +2 =25
-2 -2
23
3x = 23


23 divided by 3 = 7
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