if a and b are independent events with p(a) = 0.38 and p(b) = 0.55, then p(a | b) =

On solving the provided question, we can say that - Level significance  = 0.05, Z = 1.96, Margin of error= 0.0349

A well-known statistical theory called the null hypothesis asserts that there is no statistical connection between two sets of observable data and measurable phenomena for a given set of observed variables. A null hypothesis is a kind of statistical hypothesis that asserts that a certain collection of observations has no statistical significance. Using sample data, hypotheses are tested to determine their viability. Sometimes known as "zero" and symbolized by H0. A scientific hypothesis is a prediction of what researchers will discover via their investigation. A statistical hypothesis, however, states what a statistician does not anticipate. The null hypothesis is so named because of this.

Null hypothesis,

Sample size, n = 570

Sample portion, P’ = 135/579 = .2368

At 95% confidence,

Level significance  = 0.05

Z = 1.96

Margin of error= 0.0349

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The rate of change of the given data between 3 and 7 hours is; 19 miles per hour

We are told that rate of change is the difference between what the value of the data began at versus the value the data ended at.

Now, the formula for the rate of change between two coordinates (x₁, y₁) and (x₂, y₂) is;

Rate of change = (y₂ - y₁)/(x₂ - x₁)

Now, we are told that we should find the rate of change from 3 to 7 hours and so we first write the coordinates;

(3, 209) and (7, 285)

Thus;

Rate of change = (285 - 209)/(7 - 3)

Rate of change = 76/4

Rate of change = 19 miles per hour

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On average, for every hour spent on clinical care two hours is spent on the EHR documenting care.

According to a new survey, physicians spend slightly over 16 minutes every patient visit examining electronic health records(EHR). For every hour of clinical care two hours are spend on EHR documentation. According to the study published in the Annals of internal medicine this accounts for a large percentage of a physician's day.

An Electronic Health Record (EHR) is an electronic version of a patients medical history, that is maintainrd by the provider over time, and may include all of the key administrative clinical data relevent to that persons care under a particular provider. It helps providers better manage care for patients and provide better health care.

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Answer:

answer on the picture. Let me know if I am right!

If f(4) = 7 then the inverse of the function f⁻¹(7) is 4.

Function is a combination of different types of variable and constants in which for the different values of x the value of function y is unique.

The given function is,

f(4) = 7

According to inverse function property,

if f(x) = y, then f⁻¹(y) = x

The inverse of function,

f⁻¹(7) = 4

The inverse of the function f(4) = 7 is f⁻¹(7) = 4.

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Answer:

Large box: 18.5 kg

Small box: 13.75 kg

Step-by-step explanation:

Let  L represent a large box, and S represents a small box

We have the equation

3L + 2S = 83 kg

5L + 6S = 175 kg

We time the first equation by -3

-9L - 6S = - 249 kg

5L + 6S = 175 kg

Now Let's find the large box weighs first

Add both equation and we get

-4L = -74 kg

L = 18.5 kg

Now put 18.5 in for the L to find the weight of the small box

5(18.5) + 6S = 175 kg

92.5 + 6S = 175 kg

6S = 82.5 kg

S = 13.75 kg

Answer:

x as large; y as small

3 large + 2 small = 83    (1st equation)

5 large + 6 small = 175    (2nd equation)

3x + 2y = 83   (multiply by -5)

5x + 6y = 175   (multiply by 3)

-15x - 10y = -415

15x + 18y = 525      (simplify)

8y = 110

y = 13.75       (small box weight)

3x + 2y = 83       (substitute the value of y)

3x + 2(13.75) = 83

3x + 27.5 = 83

3x = 55.5

x = 18.5       (large box weight)

3x + 2y = 83

3(18.5) + 2(13.75) = 83

55.5 + 27.5 = 83

83 = 83          (1st equation is proven right)

5x + 6y = 175

5(18.5) + 6(13.75) = 175

92.5 + 82.5 = 175

175 = 175           (2nd equation is proven right)

therefore, large box weight is 18.5kg and the small box weight is 13.75kg.

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Step-by-step explanation:

Answer:

D) six and one third feet

Step-by-step explanation:

To find the total amount of wood that Harry needs, we need to find the total length of the three pieces of wood that are two and three fourths feet long and the total length of the six pieces of wood that are one and one third feet long.

The three pieces of wood that are two and three fourths feet long have a total length of 3 * 2 and 3/4 = 6 and 1/4 feet.

The six pieces of wood that are one and one third feet long have a total length of 6 * 1 and 1/3 = 8 and 2/3 feet.

To find the total length of all the pieces of wood, we need to add the total length of the three pieces that are two and three fourths feet long and the total length of the six pieces that are one and one third feet long. This gives us a total of 6 and 1/4 + 8 and 2/3 = 14 and 7/12 feet.

Therefore, Harry will need a total of 14 and 7/12 feet of wood for the project. This is equivalent to approximately six and one third feet, so the correct answer is d) six and one third feet.

The required equation of the line is y = 4x + 1.

The Slope-intercept form of a line is given by

Where m is the slope of the line and c is the y-intercept

Note:

The product of slopes of perpendicular lines = -1

Here we have

y = -1/4x + 6 Line (1)  

Here slope of the line m₁ = -1/4

Let y = m₂x + c Line (2)

Assume that Line (2) is the perpendicular line to Line

As we know The product of slope of two perpendicular lines is -1  

=> m₁m₂ = -1        [∵ Line (1) and Line (2) perpendicular lines ]

=> -1/4(m₂) = -1     [ ∵ m₁ = -1/4  ]

=>  m₂ = 4

The line (2) => y = 4x + c  

Given that the line passes through (2, 9)

=> 9 = 4(2) + c

=> c = 9 - 8

=> c = 1

Therefore,

The required equation of the line is  y = 4x + 1

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96 minimum sample size required to have 95% confidence that the variance of the sample is within 20% of the variance of the population.

Given that,

We have to determine the minimal sample size required to have 95% confidence that the variance of the sample is within 20% of the variance of the population.

We know that,

Confidence Interval is CI=95%

Variance is σ²=20%

We have

n=(Z/M.E)²

n=(1.96/0.20)²

n=(9.8)²

n=96.04

Therefore, 96 minimum sample size required to have 95% confidence that the variance of the sample is within 20% of the variance of the population.

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Answer: 5x and 3x

Step-by-step explanation:

5x and 3x are like terms because they both have the same variable being multiplied to them which is x.

The profit function for this problem is defined as follows:

P(x) = 5x - 260.

The profit function is defined as the subtraction of the revenue function by the cost function, as follows:

P(x) = R(x) - C(x).

In which:

From the image given at the end of the answer, the revenue function and the cost function are given as follows:

Then the profit function is calculated as follows:

P(x) = R(x) - C(x)

P(x) = 3x² + 4x - 60 - (3x² - x + 200).

Combining the like terms, we have that:

P(x) = (3 - 3)x² + (4 + 1)x - 60 - 200

P(x) = 5x - 250.

Meaning that the third option is correct.

The problem is given by the image shown at the end of the answer.

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The probability that the next chew that Jamar removes from the bag will be an apple chew is of:

0.9 = 90%.

In the context of an experiment, a probability is calculated as the division of the number of desired outcomes in the context of the problem by the number of total outcomes in the context of the experiment.

In this problem, the outcomes are given from the previous experiments, hence we have an experimental probability.

The outcomes are given as follows:

Then the probability that the next chew that Jamar removes from the bag will be an apple chew is calculated as follows:

p = 53/59 = 0.9 = 90%.

The problem is given by the image shown at the end of the answer.

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0.003 is the probability that the number of calls among the 25 that involve a fax transmission exceeds the expected number by more than 2 standard deviations

To calculate the probability that the number of calls among the 25 that involve a fax transmission exceeds the expected number by more than 2 standard deviations.The mean is the expected number of calls involving a fax transmission, while the standard deviation is the measure of variability in the distribution. We then use this information to calculate the probability of exceeding the expected number by more than 2 standard deviations, which can be done using the z-score formula. The z-score for values more than 2 standard deviations away from the mean is 2.33, which corresponds to a probability of 0.003. Thus, the probability that the number of calls among the 25 that involve a fax transmission exceeds the expected number by more than 2 standard deviations is 0.003.

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The total distance Renaldo could travel on his trip when he starts from Atlanta goes to London and  Newyork city, and return to Atlanta is 15502 miles.

The complete movement of an object, regardless of direction, is referred to as distance. The amount of ground a thing travels from its starting point to its destination is also referred to as distance.

Given:

The distance between Atlanta and London = 4281 miles,

The distance between London to Newyork city  = 3470 miles,

Write the trip blue plan as shown below,

Renaldo start from Atlanta → London → Newyork city →  London → Atlanta

Calculate the total distance as shown below,

The total distance = 4281 + 3470 + 3470 + 4281

The total distance = 2 (4281 + 3470)

The total distance = 2 × 7751

The total distance = 15502 miles

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The dimension is d and d<n. Thus maximum number of linearly independent vectors that can draw from the set V1, V2....Vn is d.

First note that for "any vector space V, basis B of V is maximal linearly independent set in V". That is there is no other any linearly independent set which contains more than |B| number of elements on B. Let us consider this statement as 1. Two or greater vectors are stated to be linearly independent if none of them may be written as a linear mixture of the others. On the contrary, if at the least certainly considered one among them may be written as a linear mixture of the others, then they may be stated to be linearly dependent. Now here dimension is d and d<n. Thus maximum number of linearly independent vectors that can draw from the set V1, V2....Vn is d.

Thus, the maximum number = d

Therefore, statement is true hence proved.

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The radius of the given region is calculated as; 19.329 km

We are told that the region is circular and as such the formula for the area of a circle is;

A = πr²

We are told that the population is 44600

Population density is defined as the average number of individuals in a population per unit are.

In this question, the population density is given as 388 people per sq. km

Thus;

Area = Population/population density

πr² = 44600/388

r² = 44600/388π

r² = 373.595

r = 19.329 km

We conclude that is the radius

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Answer: 17

Step-by-step explanation: 2 is an even number and 17 is an odd number, therefore it can't be divisible by 2. 17 does not have a 5 or a 0 in it therefore it is not divisible by 5. Any multiple of 5 will always have a 5 or 0 in it. If it doesn't have a zero in it anywhere it is not divisible by 10. A multiple of 10 will always have a zero in it.

Convert the radicals as follows:

The simplification of the expression are;

[tex]\sqrt[6]{25^3}[/tex] = 5

[tex]\dfrac{1}{\sqrt[3]{5^4} } =\dfrac{1}{5^{4/3}} }[/tex]

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

The Numbers constants, variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbol; which can also be used to indicate the logical syntax's order of operations and other features.

We are given the expression as;

[tex]\sqrt[6]{25^3}[/tex]

Convert the radicals as follows:

[tex]\sqrt[6]{25^3}\\\\= \sqrt[6]{(5^2)^3}\\\\= \sqrt[6]{5^6}\\\\=5^{6/6}\\=5^1=5[/tex]

Now,

[tex]\dfrac{1}{\sqrt[3]{5^4} } =\dfrac{1}{5^{4/3}} }[/tex]

Here this cannot be further simplified.

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To find the equation of the line that passes through the point (1, 2) and is perpendicular to the line y=3x-1, we can first find the slope of the line y=3x-1. The slope of this line is 3, so a line perpendicular to it will have a slope of -1/3. We can then use the point-slope form of the line to write the equation of the line that passes through (1,2) and has a slope of -1/3. The point-slap form of a line is given by y-y₁ = m(x-x₁), where (x₁,y₁) is a point on the line and m is the slope of the line. Plugging in the coordinates of the point (1,2) and the slope -1/3, we get the equation y-2 = -1/3(x-1), which simplifies to y-2 = -x/3 + 1/3. Multiplying both sides of the equation by 3 to get rid of the fractions, we get 3y-6 = -x+1. Finally, we can move all the terms to one side of the equation to get the standard form of the line: 3y-x-5 = 0. Therefore, the equation of the line that passes through the point (1, 2) and is perpendicular to the line y = 3x - 1 is x-3y-5=0, so the correct answer is A.

Answer:

Step-by-step explanation:Sketch the curve with equation x^(2/3) + y^(2/3) = 1 and usesymmetry to find its length.

Answer: 18/9 if not it's something along that-

Step-by-step explanation:

7^2 = 49 so like 49-31 equals 18 and the denominator 3^2 = 9 , so if it's not 18/9 then it's like 1/2 or something bc 9 + 9 is 18 yk-

Answer:

(3, 9)

Step-by-step explanation:

You start on (0, 0), and try and remember the term, "you run before you can jump(x before y, (x, y)) when working with coordinates.

X axis: so you "run" 3 units to the right, as it's not a negative number. so now your on (3, 0) (dark blue arrows)

Y axis: now you do the "jumping" portion of this, so you jump up six units as it's a negative, so now your on (3, 6) (red arrows)

Y: axis: but now you have to move down 1 unit, so you essentially "fall" 1 unit down, (3, 5) (pink arrow)

Y axis:  you have to "jump" 4 units up now, so now your at (3, 9) (green arrows)

you haven't moved along the X axis so you keep the 3, you only moved the Y axis.

So your asnwer is (3, 9)!

Hope this helped!! (picture help as well!)

Answer:

Step-by-step explanation:

< 4/7

The right answer is: E, according to the Central Limit Theorem for proportionality. The statistic is inaccurate.

In probability theory, the central limit theorem establishes that, in many situations, when independent random variables are summed up, their properly normalized sum tends toward a normal distribution even if the original variables themselves are not normally distributed.

The Central Limit Theorem establishes that for a proportion p in a sample of size n:

The expected value is μ=р

The standard error is s=[tex]\sqrt{\frac{p(1-p)}{n} }[/tex]

In this problem, the expected value is different of the expected of μ=р , hence, the statistic is biased, and the correct option is E.

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Answer: Only 1 pound.

Step-by-step explanation: It saying it Infront of ya as it said "1 pound fills each acre each".

48 is the number does not belong in the following series 1, 2, 5, 10, 13, 26, 29, 48

The series is formed by following the sequence that is:

1, 2, 5, 10, 13, 26, 29, 48

Number pattern is a pattern or sequence in a series of numbers. This pattern generally establishes a common relationship between all numbers. A recursive pattern rule is a pattern rule that tells you the start number of a pattern and how the pattern continues.

The first number is multiplied by 2 and the next number should be added by 3 to the previous number.

The first number is 1 and it should be multiplied by 2

1 × 2 = 2

Then the next number should be added by 3

2 + 3 = 5

The series will be continued:

5 × 2 = 10

10 + 3 = 13

13 × 2 = 26

26 + 3 = 29

but 29 × 2 = 58 ≠ 48.

Therefore the number 48 does not belongs to the given series.

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By subtracting the cost of goods sold form the net sales, the gross profit = $439000.

Gross profit is a financial measure that represents the difference between a company's net sales and the cost of goods sold. It is a key indicator of a company's profitability and can be used to assess the efficiency of the company's operations.

The formula for calculating gross profit is:

Gross profit = net sales - cost of goods sold

Gross profit = net sales - cost of goods sold

Gross profit = $732400 - $293400

Gross profit = $439000

Therefore, the gross profit of the company is $439000.

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In 84 ways 3 employees can be chosen from the set of 9.

What is combination?

Total 9 employees from that 3 employees can be chosen.

Total number of combination = ⁹C₃

= 9! / (9-3)! 3!

= 9 *8 *7/3*2

=3* 4* 7

= 12 * 7

= 84

Hence, in 84 ways 3 employees can be chosen from the set of 9.

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Answer:

120

Step-by-step explanation:

5(22-16) + 5(10+8)

5(6) + 5(18)

30 + 90

120

Answer: x=9, excluded value x≠5

Step-by-step explanation:

1. add 3 to both sides -> 16/x-5 = 4

2. then multiply both sides by x-5 -> 16=4(x-5) -> 16=4x-20

3. add 20 to both sides -> 36=4x

4. divide both sides by 4 to solve for x -> 9=x

the excluded value is whatever would make the denominator of the fraction equal to 0. You can't divide by 0. Therefore in this case, x can't equal 5 because 5-5=0