Standard error for sample proportion = √{[p₁/p₂(1-p₁/p₂)]/2}
What means standard error?
Standard error is a statistical statement that express the accuracy of an estimation resulting from survey study. It indicates how much a sample means is differ from actual population mean.
How to calculate standard error?
We calculate standard error for the two-survey group by using the following formula.
√[p(1-p)/n]
p is the proportion of freshmen living on campus to the freshmen living off campus
p = p₁/p₂
According to the given question:
p₁ = freshmen living on campus
p₂= freshmen living off campus
n= number of survey group
n=2
hence, standard error =√{[p₁/p₂(1-p₁/p₂)]/2}
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Give the values of b, h, and k for the function
The value of b = 5 , h = -4 and k = -1 for the function f(x) = [tex]log_{5}[/tex](x - 4) - 1
What is a function ?
An expression, rule, or law in mathematics that specifies the relationship between an independent variable and a dependent variable (the dependent variable).
A relationship between a group of inputs and one output each is referred to as a function. In plain English, a function is an association between inputs in which each input is connected to precisely one output. A domain, codomain, or range exists for every function.
An input is connected to an output by a function. It resembles a device with an input and an output. In addition, the output is somehow connected to the input. The standard way to write a function is f(x) "f(x) =... "
Translated of logarithmic function:
f(x) = [tex]log_{b}[/tex] (x + h) + k
where b is base, h - horizontal shift, k - vertical shift
According to given function the values are:
b = 5, h = - 4, k = - 1
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Solve the equation for z.
6 = 8x
Answer:
Step-by-step explanation:
help please, show steps to the question
The interest rate for Rebeka's account is 5%.
What is the meaning of interest rate?
The amount that the lender charges the borrower over and beyond the principal amount is referred to as the interest rate. A person who deposits money in a bank or other financial institution also earns additional income in terms of the recipient, known as interest, taking into account the time value of money.
Given that, Rebeka deposits $1500. She earn $131.25 as interest after 21 months.
The formula of simple interest is
I = PRT
I = interest
P = Principal
R = Rate of interest
T = time
In the given question,
P = $1500
I = $131.25
T = 21 months = 21/12 years.
Putting P = $1500, I = $131.25, T = 21/12 years in I = PRT:
131.25 = 1500 × R × (21/12)
Divide both sides by 1500 × (21/12):
R = 131.25 /[1500 × (21/12)]
R = [131.25 × 12] /[1500 × 21]
R = 0.05
R = 5%
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find the lengths of the hypotenuses (x) of the triangle whose legs are given
1) 3cm,4cm
a = 3 cm
b = 4 cm
c = ?
c = √{ a² + b² }
c = √{ 9 + 16 }
c = 5 cm
_____
Answer:
5cm
Step-by-step explanation:
You use the Pythagoras theorem
[tex] {a}^{2} + {b}^{2} = {c}^{2} \\ {3}^{2} + {4}^{2} = {c}^{2} \\ 9 + 16 = {c}^{2} \\ 25 = {c}^{2} \\ \sqrt{25} = \sqrt{ {c}^{2} } \\ 5 = c \\ c = 5[/tex]
if the nth term of a number sequence is n^2+1 find the first three terms and the tenth term
Answer: The first three terms of the sequence are: 1^2+1=2, 2^2+1=5, 3^2+1=10
The tenth term of the sequence is: 10^2+1=101.
Step-by-step explanation: To find the first three terms of a number sequence in which the nth term is n^2+1:
For the first term, set n equal to 1 and substitute it into the formula: 1^2 + 1 = 2
For the second term, set n equal to 2 and substitute it into the formula: 2^2 + 1 = 5
For the third term, set n equal to 3 and substitute it into the formula: 3^2 + 1 = 10
To find the tenth term of the same sequence, set n equal to 10 and substitute it into the formula: 10^2 + 1 = 101.
Tell whether a correlation is likely for the number
of car accidents and the weather. If so, tell whether
there is a causal relationship. Explain your
reasoning.
There is a correlation that is likely for the number of car accidents and the weather as wet pavement and rainfall leads to more accidents.
What is correlation?The size and direction of a relationship between two or more variables are described by the statistical measure of correlation, which is expressed as a number. However, a correlation between two variables does not necessarily imply that a change in one variable is the reason for a change in the values of the other.
Weather-related issues will have an impact on our roads and reduce tire traction. Once more, it is advised to slow down while driving on slick roads, increase our following distance, and take more time to slow down when coming to a stop.
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Suppose that ΔFAR is similar to ΔSUN. Part A: Identify the corresponding angles.
Angle F is correspond to angle S. Angle A is congruent to angle U
and Angle R is congruent to angle N.
What is Triangle?A triangle is a three-sided polygon that consists of three edges and three vertices.
Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion
Given that ΔFAR is similar to ΔSUN.
We need to find the corresponding sides.
Corresponding angles are the angles that are in the same position in any different 2-dimensional shapes.
For any two polygons to be congruent, they must have exactly the same shape and size.
This means that all their interior angles and their corresponding sides must be the same measure.
Angle F is correspond to angle S.
Angle A is congruent to angle U.
Angle R is correspond to angle N.
Hence, Angle F is congruent to angle S. Angle A is congruent to angle U
and Angle R is congruent to angle N.
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1 2/5m - 3/5 ( 2/5m + 1 ) I tried -3/5 it is wrong simplify pls
Answer:
[tex] \sf \: \frac{29m - 15}{25} \: (or)1 \frac{4}{25}m - \frac{3}{5} [/tex]
Step-by-step explanation:
Given expression,
→ 1 2/5m - 3/5(2/5m + 1)
Simplifying the given expression,
→ 1 2/5m - 3/5(2/5m + 1)
→ (7/5)m - 3/5(2/5m + 1)
→ (7/5)m - (6/25)m - (3/5)
→ (35/25)m - (6/25)m - (3/5)
→ ((35 - 6)/25)m - (3/5)
→ (29/25)m - (3/5)
→ (29m - 15)/25
→ 1 4/25m - (3/5)
Hence, answer is 1 4/25m - (3/5).
Poinsettias are native to Mexico there are 25,209 poinsettia flowers to the processions path what is the number rounded to the largest place value
The number 25209 rounded to the largest place value is 30000.
What is a place value?Every digit in a number has a place value, which is a numerical value determined by the digit's position.
Step 1: First, decide which location value has the highest worth.
The number that is farthest to the left has the highest place value.
Providing the value is not zero.
In the number 25209,
2 is the largest place value.
Step 2: Next, take a look at the number that is closest to the largest place value.
The greatest place value remains the same if the number is 0, 1, 2, 3, or 4.
The highest place value increases by one if the number to the right is a 5, 6, 7, or 9.
We have number 5 to the right of 2.
The number rounded to the largest place value is 30000.
Therefore, the required number is 30000.
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the probability of an archer hitting her target is 83%. suppose she has 20 shots to take, and each shot is independent of the others. let x represent the number of targets hit. what is the mean of x?
the probability of an archer hitting her target is 83%.The mean of x is 16.6 (16.6 targets hit).
The probability of the archer hitting her target is 83%. This means that for each shot she takes, the probability of her hitting her target is 0.83. Since she has 20 shots to take, the expected number of targets hit is 20 x 0.83, which is 16.6.
The mean of x, which is the number of targets hit, is therefore 16.6. This can be calculated by taking the probability of success (0.83) multiplied by the number of trials (20), which gives the expected value of 16.6.
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write the expression as a single logarithm with coefficient 1. assume all variables represent positive real numbers. 1/4logbx^5y^7-4/7logbx^4y
the formula as one logarithm with a coefficient of 1 with a expression. assume all variables represent positive real numbers. 1/4logbx^5y^7-4/7logbx^4y is logbx^4y^11/28
Since the coefficients of the expression of two logs are not the same, we need to adjust the exponents in order to combine them into one logarithm. Since the first logarithm has a coefficient of 1/4, we multiply the exponent of the second logarithm by 4/7 to get 4/7*4 which is equal to 4. We then add 4 to the exponent of the first logarithm to get 11. This gives us a combined logarithm of logbx^4y^11/28.
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Simplify the expression. 14+(-4)-6/7j-3/7j+7
Answer: 17 - 9/7j
Step-by-step explanation:
Look, simplifying is really easy! Just go along and learn!
14 + (-4) - 6/7j - 3/7j + 7
The (+,-) rule, remember the minus always overides the plus no matter what.
6 + 3 = 9 So, -6 - 3 = -9
14 - 4 -9/7j + 7
14 - 4 = 10
10 + 7 - 9/7j
10 + 7 = 17
17 - 9/7j
This would be your simplified answer.
If B is the midpoint of AC, which of the following choices is the value of x?
44
5
10
None of these choices are correct.
Math
-
Because point B is midpoint of AC , so AB = BC . Therefore :
8x + 4 = 10x - 6
10x - 8x = 4 + 6
2x = 10
x = 5 ✓
_____
You buy the following from Amazon:
25 flash drives for $10 each
What is the Subtotal: $
Today only they are 25% off, how much do you save: $
What is the new Subtotal: $
Sales tax is 4%: $
What is the total: $
(For all numbers, put in the change. If there is no change, make sure you put .00. For example, if the amount was 27, make sure you put 27.00.
If there is no number in the pennies place, make sure you put a 0. For example, if your amount was 5.4, make sure you put 5.40)
The Subtotal for 25 flash drives is $250.00. You can save $62.50. The new Subtotal becomes $187.50. Sales tax of 4% will equal $7.50. The Total for the 25 flash drives will be $187.50 + $7.50 which gives $195.00
To find the solution, we must solve for the questions individually;
The Subtotal is 25 x $10 = $250.00
You save = 25% of $250
which is 25/100 x 250 = $62.50
The new Subtotal = $187.50
Sales tax of 4% = 4% of $187.50
which gives 4/100 x 187.5 = $7.50
The Total for the 25 flash drives will be $187.50 + $7.50 = $195.00
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How do I find the area? I don’t know which one is the base or height.
Answer:
1
Step-by-step explanation:
the height is 2/3ft because it makes a right angle with the surface
base is 3 ft
area: 1/2 x 3 x 2/3 = 1 ft^2
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What fraction has the same value as 55.5%
Answer:
55.5 as a fraction is 111/2.
Answer: 55.5 as a fraction is 111/2.
Step-by-step explanation:
2. Which of the following illustrates how to find the difference of 4h5k and -7hk5?
(4+7) h5k5
Not possible.
(4+7) h5-1¹-5
(4-7)hok
The difference of 4h5k and -7hk5 Not possible.
What is the explanation?Which of the following provides an example of to calculate the difference between 4h5k and -7h5k
Subtraction statement is the minuend. The second number in the subtraction statement is called "subtrahend," and the difference between the two numbers is what we obtain as a consequence.Changing the situation 4h^5k - (-7hk^5)= 4h^5k +7hk^5
Making the distinction
4h^5k - (-7hk^5)
= 4h^5k +7hk^5
assemble similar phrases
Take note of similar phrases is hk(4h^4+7k^5)
There can be no difference, therefore.
= hk(4h^4+7k^5)
As a result, the difference is Not possible.
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If AC is 15, what is BC?
A
O A. 15
OB. 13
O C. 3
OD. 2
4x+1
2x-4
Option D is correct that is BC = 2
What is a line?A line is a perfectly straight, one-dimensional shape that is endlessly long and thin in both directions.
She tells us that AC is 15, and we may deduce that AC equals AB plus BC from the figure.
AC Equals AB plus BC.
AB=4X+1, BC=2X-4, and AC=15
15 = 4X +1 + 2X- 4
15 = 6X - 3
18 = 6X
X = 3
We now know that 2X - 4
2(3) - 4 = 2 since we have X = 3.
BC = 2.
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What i the dicontinuity of f(x) = the quantity of 4x quared minu 16, all over 2 x minu 4
At x = 4, the function f(x) = (x2 - 16)/(6x - 24) discontinues.
Where is a break in the line?When a number is 0 in the numerator as well as the denominator, a point of discontinuous is reached. There's an point of disconnection there since both the exponent and the denominator are zeros. Plug into the last simplified equation to obtain the value, where is the region of discontinuous.
Briefing :We are given the function as;
f(x) = (x² - 16)/(6x - 24)
We must find the function's discontinuities.
Now, when x = 4, the fraction 6x - 24 equals 0.
This means that the function is now incomplete when x = 4.
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one of the most pieces of information with a var is whether each estimated coefficient for the lags are statistically significant (t-tests) true false
False, one of the most pieces of information with a var is whether each estimated coefficient for the lags is statistically significant (t-tests)
Statistical test (t-test)A statistical test called a t-test is employed to compare the means of two groups. It is frequently employed in hypothesis testing to establish whether a procedure or treatment truly affects the population of interest or whether two groups differ from one another.
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Haley B. Workin did eight chores in the morning. She did 40% of her daily
chores in the morning. How many daily chores does she have?
Answer:
20
Step-by-step explanation:
You want to know how many daily chores Haley has if 40% of them are 8 chores.
ChoresLet c represent the number of daily chores. The number of chores accomplished in the morning was ...
0.40c = 8
Dividing by 0.40, we find ...
c = 20
Haley has 20 daily chores.
I need help on this Math. You have to find the y-intercept, then put it he y-intercept in coordinate form, and the slope. It was due so long ago. I don't know what to do.
Answer:
Y-Intercept is equal to 100
Y-Intercept in Coordinate for is (0,100)
Solve this system of equations by graphing. First graph the equations, and then type the solution.
Answer:
(6,0)
Step-by-step explanation:
Solving a system of equations is finding where 2 (or more) lines intersect.
Graph the lines:
y = x/6 - 1
and
y = -2/3x + 4
(linked)
Look at where they intersect (meet).
(6,0)
Which statement describes the domain and range of the exponential function f(x) = – 4x?
A.The domain and range are both the set of all real numbers.
B.The domain is the set of all real numbers and the range is the set of all negative real numbers.
C.The domain is the set of all real numbers and the range is the set of all real numbers less than or equal to –4.
D.The domain is the set of all real numbers greater than 0 and the range is the set of all real numbers less than 0.
The statement describes the domain and range of the exponential function f(x) = – 4ˣ is
A.The domain and range are both the set of all real numbers.
What is range in graph ?The y-axis on a graph represents the possible output values, or range.
while the domain is the input values.
The domain of the exponential function f(x) = – 4ˣ is set of all real numbers
The range considering the domain is also set of all real numbers since it can be positive or negative depending on the value of the domain
It is worthy to note that the domain and range of the graph may be larger than the values seen if the graph extends beyond the area that is visible.
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a new car is purchased for 26,600 dollars. the value of the car depreciates at a rate of 9% per year. which equation represents the value of the car after 3 years?
After 3 years, the value of the car will be approximately $20,959.34.
The depreciation of an asset is the reduction in the value of the asset over time due to wear and tear, obsolescence, or other factors. The depreciation equation is used to calculate the amount by which the value of an asset decreases each year.
The value of the car after 3 years can be represented by the following equation:
V = 26600 * (1 - 0.09)^3
Where V is the value of the car after 3 years and 0.09 is the depreciation rate per year.
Solving this equation gives us a value of V = $20,959.34.
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Answer:20044.9886
Step-by-step explanation:
The point N lies on the segment MP.
Find the coordinates of N so that the ratio of MN to NP is 5 to 4.
The coordinate of the point N that divides the line segment MP will be (9, -5).
What is the section of the line?Let A (x₁, y₁) and B (x₂, y₂) be a line segment. Then the point P (x, y) divides the line segment in the ratio of m:n. Then we have
x = (mx₂ + nx₁) / (m + n)
y = (my₂ + ny₁) / (m + n)
The coordinates of the endpoint are (-6, 5) and (21, -13). And the ratio is 5:4. Then the coordinate of the point N is given as,
x = (21 × 5 + (-6) × 4) / (5 + 4)
x = 81 / 9
x = 9
y = ((-13) × 5 + 5 × 4) / (5 + 4)
y = - 45 / 9
y = - 5
The coordinate of the point N that divides the line segment MP will be (9, -5).
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You randomly chooe one of the chip. Without replacing the firt chip, you chooe a econd chip. Which quetion i different?
The probability is 0.07777.
What does probability mean?
The number of desired outcomes divided by the total number of outcomes yields a probability.
We are attempting to determine the likelihood, out of 10, that the first chip will be white and the second won't be green while assuming that one chip is white and two are green.
1/10 of the time, the initial chip will be white. If the first chip is white, there is a 7/9 chance that the second chip will be a color other than green. The desired probability is therefore provided by:
Ten chips are present.
white 1
red 4
green 2
Blue 3
the likelihood of selecting the W chip is one in ten, or 0.10
There are now only 9 chips left (the first chip was not replaced)
Selecting a non-green chip has a probability of (9-2)/9 = 7/9 = 0.7777.
you multiply the two probabilities to obtain the overall probability at this point.
probability is 0.1 to 0.7776.
The probability is equal to 0.07777, which implies that it must be less than 0.1.
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Graph the points (0.5,4.5) and (-0.5,-4.5)
Answer:
Step-by-step explanation:
To graph the points (0.5, 4.5) and (-0.5, -4.5) on a coordinate plane, you can use a ruler or a graph paper to plot the points.
To plot the point (0.5, 4.5), start by drawing the horizontal and vertical axes of the coordinate plane. The horizontal axis, or the x-axis, is the line that runs horizontally across the plane, and the vertical axis, or the y-axis, is the line that runs vertically. The intersection of the two axes is called the origin.
Next, locate the point (0.5, 4.5) on the coordinate plane. To do this, find the point that is 0.5 units to the right of the y-axis and 4.5 units above the x-axis. This point is the point (0.5, 4.5).
To plot the point (-0.5, -4.5), locate the point that is 0.5 units to the left of the y-axis and 4.5 units below the x-axis. This point is the point (-0.5, -4.5).
The resulting graph should look like this:
|
4.5| * (0.5, 4.5)
|
|
|
|
0.5| * (-0.5, -4.5)
|
|
|
-4.5
-4.5 -2.5 -0.5 0.5 2.5 4.5
-0.5
Let f and g be the functions defined by f(x) = 1 + x + e^x^2 - 2x and g(x) = x^4 - 6.5x^2 + 6x + 2. There are two regions on the interval 0 x 2 which are enclosed / and g.
For given functions f and g, the sum of the areas of the enclosed regions is 2.004 sq. units. and the sum of the volumes of the enclosed regions is 1.283 cubic units
In this question we have been given two functions f and g defined by
f(x) = 1 + x + e^x^2 - 2x and g(x) = x^4 - 6.5x^2 + 6x + 2.
There are two regions on the interval 0 x 2 which are enclosed / and g. We need to find the sum of the areas of the enclosed regions and the sum of the volumes of the enclosed regions.
The graph of functions is as shown below.
We can observe that the graphs of y = f(x) and y = g(x) intersect in the first quadrant at the points (0, 2), (2, 4), and (A, B) = (1.032832, 2.401108).
The sum of the areas of the enclosed regions is given by
A = ∫[0-A] (g(x) - f(x)) dx + ∫[A - 2] (f(x) - g(x)) dx
A = 0.997427 +1.006919
A = 2.004
And the sum of the volumes of the enclosed regions is given by
Volume V =∫[0-4] [[ƒ(x) − g(x)]² dx
V = ∫[0-4] [1 + x + e^x^2 - 2x - x^4 + 6.5x^2 - 6x - 2]^2 dx
V = 1.283
Therefore, the sum of the areas of the enclosed regions is 2.004 sq. units. and the sum of the volumes of the enclosed regions is 1.283 cubic units
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Nathan is going to drive from his house to City A without stopping. Let D represent
Nathan's distance from City At hours after leaving his house. A graph of D is shown
below. Write an equation for D then state the slope of the graph and determine its
interpretation in the context of the problem.
The linear function for D is defined as follows:
D(t) = -35t + 280.
The slope of 35 means that Nathan is traveling at a velocity of 35 miles/km per hour.
How to define the linear function?The linear function for this problem is defined in slope-intercept format, as follows:
y = mx + b.
The coefficients of the function are given as follows:
m is the slope, representing the rate of change of the output variable y relative to the input variable x.b is the y-intercept, representing the initial value of the output variable y.From the table, two points are given as follows:
(3, 175) and (5,105).
Given two points, the slope is calculated as the change in y divided by the change in x, hence:
m = (105 - 175)/(5 - 3) = -35.
This slope represents that Nathan is traveling at a velocity of 35 miles/km per hour.
Hence:
D(t) = -35t + b
When x = 3, y = 175, hence the intercept b is obtained as follows:
175 = -35(3) + b
b = 280.
Thus the function is of:
D(t) = -35t + 280.
Missing InformationThe table is given by the image shown at the end of the answer.
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