Answer:
CI = ( 0,539 ; 0,599)
Step-by-step explanation:
The proportion p₀ of person that hung up the phone in the first minute of waiting is:
p₀ = 569/1000 p₀ = 0,569 p₀ = 56,9 %
Then q₀ = 1 - 0,569 q₀ = 0,431 q₀ = 43,1 %
Sample size is n = 1000
A 95 % CI is: α = 5 % α = 0,05 a/2 = 0,025
In z-table we look z ( score ) for 0,025 z = ± 1,96
Now CI for proportion is:
p₀ - z (α/2) * √ (p₀*q₀ )/n < p < p₀ + z (α/2) * √ (p₀*q₀ )/n
we need to find out
z(α/2) * √ (p₀*q₀ )/n = 1,96*√ ( 0,569*0,431)/1000 = 1,96 *0,01566 =0,03
Then
CI ( 95%) = 0,569 ± 0,03 = ( 0,569 - 0,03 ; 0,569 + 0,03)
CI = ( 0,539 ; 0,599)
If a class of 27 students had a mean of 72 on a test, interpret the mean of 72 in the sense of a fair share measure of the center of the test scores.
The fair share measure would mean that the score of 72 would be the score all 27 students got on the test if they all had the same score.
A fair share measure of the center of the test scores is 72 be the score all 27 students got on the test.
We have given that
a class of 27 students had a mean of 72 on a test,
What is the fair share?An equitable or reasonable portion or share of something
The fair share measure would mean that a score of
72 be the score all 27 students got on the test.
If they all had the same score.
Therefore 72 was the score all 27 students got on the test.
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In the diagram, MQ is perpendicular to PR, and AMPR is isosceles. What is the measure of /MQR?
Answer:
90 I hope this helps good luck
Answer:
Its 90 degrees but I am not sure what you are asking
Step-by-step explanation:
What is the area of the triangle?
Answer:
10
Step-by-step explanation:
1/2×(-2-(-7))×(6-(-4))
Pilot Shop is a catalog business providing a wide variety of aviation products to pilots throughout the world. Maynard Shephard, the recently hired assistant controller, has been asked to develop a cost function to forecast shipping costs. The previous assistant controller had forecast shipping department costs each year by plotting cost data against direct labor-hours for the most recent 12 months and visually fitting a straight line through the points. The results were not satisfactory.
After discussions with the shipping department personnel, Maynard decided that shipping costs could be more closely related to the number of orders filled. He based his conclusion on the fact that 10 months ago the shipping department added some automated equipment. Furthermore, he believes that using linear regression analysis will improve the forecasts of shipping costs. Cost data for the shipping department have been accumulated for the last 25 weeks. He ran two regression analyses of the data, one using direct labor-hours, and one using the number of cartons shipped. The information from the two linear regressions follows:
Regression 1 Regression 2
Equation SC = 804.3 + 15.68DL SC = 642.9 + 3.92NR
R-squared .365 .729
Standard error of the estimate 2.652 1.884
t-value 1.89 3.46
where:
SC = total shipping department costs DL = total direct labor-hours
NR = number of cartons shipped
Required
1. Identify which cost function (regression 1 or regression 2) Pilot Shop should adopt for forecasting total shipping department costs and explain why.
2. If Pilot Shop projects that 600 orders will be filled the coming week, calculate the total shipping depart- ment costs using the regression you selected in requirement 1.
3. Explain two or three important limitations of the regression you selected in requirement 1, and identify one or two ways to address the limitations. Specifically include in your discussion the effect, if any, of the global nature of Pilot Shop’s business.
Step-by-step explanation:
1. The second regression should be adopted for forecasting because the R² is higher in this regression and the standard error is also smaller. the t value is also better in this regression compared to the first
2. Using regression 2, the estimated shipping cost is to be calculated here.
= 642.9 + 3.92NR
NR = 600
642.9 + 3.92X600
= 642.9 + 2352
= $2994.9
This is the estimated shipping cost.
3. The limitations could be due to error in data, the data could be unreliable because of the presence of outliers. Pilot shop is a global business so there is another factor to adds to the limitations, as this costs of buying and shipping are affected by fluctuations in exchange rate and variations in the global market.
Please help me do not and please give me an explanation too please. No link please
Answer:
I'm pretty sure it's D.40 because it's the biggest number and 6+13+17 is only a bit bigger than 24. Also, all the numbers add up to 60 and 27 is only a bit less than 50% of 60
how do I solve "k−26.5=99.1"
Answer: =125.6
Step-by-step explanation:
Add 26.5 to both sides of the equation
Simplify
A triangle has a base of 10 inches and a height of 4.5 inches. What is the area of the triangle in square inches?
Answer:
22.5
Step-by-step explanation:
10 x 4.5 = 45 divided by 2 is 22.5
Answer:
22.5inch²
Step-by-step explanation:
area of a triangle = 1/2 base × height
base = 10 inches, height = 4.5inches
area = 1/2× 10 × 4.5
area = 5×4.5
area = 22.5inch²
Calcule o quociente e o resto da divisão, usando a divisão inteira de polinómios,
de: -6x^3+4x^2-3 por 2x+2
Answer:
can you type it in english pls, thank you
what's the value of s for s + 10 = 6?
-4 is the value for s
What is the degree of 4x6 - 2x3 + x-3 + x3?
Answer here
What’s the answer
Answer:
=4x6−x3+x−3
Step-by-step explanation:
Answer:
The degree of this polynomial is 6
Step-by-step explanation:
You write the greatest exponent
Question 13 please help& give explanation if possible thank u
Answer:
Step-by-step explanation:
When f ( x ) = 9 x 2 + x − 5 , evaluate f ( − 4
Answer:
is that supposed to be a squared x?
9(-4)^2 + (-4) - 5 = 135
9(-4) × 2 + (-4) - 5 = -81
id.k which one is right sorry
i just don’t understand the math
Answer:
5 out of 25
Step-by-step explanation:
The amount of apple fritters is 2 out of ten orders. 2/10 simplifies to 1/5. If u put 1/5 next to x/25 on a piece of paper, u can see that 5 times 5 will give u 25. This means that u should also multiply 1 times five to find the value of x. 1x5=5. So, 5 out of 25 pastries should be apple fritters. Hope this is right, let me know!
How are area and volume similar?
Answer:
Area is the space within the perimeter of a two-dimensional figure. Volume is the amount of space inside the bounds of a three-dimensional object.
Step-by-step explanation:
Hope this will help
Answer:
Area is the space within the perimeter of a two-dimensional figure. Volume is the amount of space inside the bounds of a three-dimensional object.
Step-by-step explanation:
hope it helps
:)
Sasha is the manager at a factory.
Last weekend 15 employees assembled 390 identical wardrobes.
Sasha wants 1200 of these wardrobes to be assembled next weekend.
How many employees does Sasha need next weekend?
You must show your working.
The number of employees Sasha would need next weekend are = 46
Calculation of total employeesFor a weekend, 15 employees = 390 wardrobes
The number of wardrobes to be assembled next weekend= 1200
If 390 wardrobes = 15 employees
1200 wardrobes = X employees
Make x the subject of formula,
X = 1200 × 15/390
X = 18000/390
X = 46
Therefore, the number of employees Sasha would need next weekend are = 46
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Which of the following examples has a unit rate of 25 feet
per second? Select all that apply.
A) 100 feet in 4 seconds
B) 150 feet in 10 seconds
C) 225 feet in 9 seconds
D) 275 feet in 11 seconds
E) 100 feet in 5 seconds
Answer:
Step-by-step explanation:
Pleaseeeeeeeeee help
Shape: Right rectangular prism
Solved for Volume
Formula: V=whl
Formula 2: L x W x H
How to solve volume Right rectangular prism?
To find the volume of a rectangular prism, multiply the length x width x height. In this case the answer will end up as 105.
Solution: V=whl=3·7·5=105
Answer: V=105
According to the admissions director of a certain college, approximately 11% of the 250 freshmen admitted had
applied using the early decision option. Suppose that we took random samples of 20 freshmen from this
population and computed the proportion of freshmen in each sample who had applied using the early decision
option. We can assume the admissions director's claim is true.
What will be the shape of the sampling distribution of p?
Answer:
Skewed to the right
Step-by-step explanation:
We have a right-skewed sampling distribution because the population proportion is so extreme relative to the sample size that there are fewer than 10 expected successes per sample.
The shape of the sampling distribution of p is skewed to the right because there are fewer than 10 projected successes per sample.
What is a histogram?It is defined as the numerical data representation in the graph with the help of a bar without space. The histogram gives an idea about the data's approximate distribution.
We have:
11% of the 250 freshmen admitted had applied using the early decision option.
Total number of samples = 20
It is given that the admissions director's claim is true.
As we can see from the data shape of the sampling distribution of p is skewed to the right because there are fewer than 10 projected successes per sample since the population proportion is so excessive in comparison to the sample size.
Thus, the shape of the sampling distribution of p is skewed to the right because there are fewer than 10 projected successes per sample.
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x is less than or equal to 25.
Question options:
x ≥ 25
x > 25
x ≤ 25
x < 25
Answer:
3rd one
Step-by-step explanation:
since its less you would do this symbol: <
and it says equal to so that means you would put a line under the symbol
Which equation represents this statement and its solution?
24.63 multiplied by 3.2
Answer:
not sure
Step-by-step explanation:
lol
someone help me with question 4 it’s not B!!!
Answer: A
Step-by-step explanation:
flip right side signs. then add across.
-12 + 4= -8
-10 - 2=-12
5+7=12
Why is stock data calculated using the subtraction and addition method instead of a simple moving average? PLEASE HURRY I AM TAKING A TEST
Answer:
The moving average (MA) is a simple technical analysis tool that smooths out price data by creating a constantly updated average price. The average is taken over a specific period of time, like 10 days, 20 minutes, 30 weeks or any time period the trader chooses. There are advantages to using a moving average in your trading, as well as options on what type of moving average to use. Moving average strategies are also popular and can be tailored to any time frame, suiting both long-term investors and short-term traders.
Step-by-step explanation:
One disadvantage to solving systems using substitution is that isolating a variable often involves dealing with messy fractions. There is another method for solving systems of equations: the addition/subtraction method.
In the addition/subtraction method, the two equations in the system are added or subtracted to create a new equation with only one variable. In order for the new equation to have only one variable, the other variable must cancel out. In other words, we must first perform operations on each equation until one term has an equal and opposite coefficient as the corresponding term in the other equation.
sorry it is so long, i hope this helps!
Please help me I really need help
I hope this helps
Answer:
2/25 of a yard
How do you write 5.13 × 10–4 in standard form?
Answer:
0.000513Step-by-step explanation:
I hope that is useful for you :)
Dimple volunteered 32 hours last month at a local animal shelter. This is 20% of the total hours that she has volunteered this year. How many hours did she volunteer this year?
If she was to volunteer 32 hours and it is worth 20%, then that means 32 hours is 1/5 of her yearly hours. If you were to multiply her volunteer hours by five, then you are getting the year number of hours she has volunteered.
32 x 5 = 160
So, she volunteers 160 hours this year.
A summer camp rewards campers and counselors with badges. The camp orders 200 badges. The plan to give 25 badges to counselors. They ordered at least 3 badges for each camper. Hie many campers can there be at the camp
Answer:
Step-by-step explanation:
200-25= 175 175÷3= 58[tex]\frac{1}{3}[/tex]There are 58 campers
There would be 58 1/3 campers at the camp.
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. Unitary method is a technique by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit. It is a method that we use for most of the calculations in math.
We are given that camp orders 200 badges. The plan to give 25 badges to counselors and ordered at least 3 badges for each camper.
Therefore, the difference would be;
200-25= 175
Then we get;
175÷3= 58 1/3
Hence, There are 58 1/3 campers
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Why do you think we need to convert normal distribution to standard normal distribution?
Answer:
The standard score (more commonly referred to as a z-score) is a very useful statistic because it (a) allows us to calculate the probability of a score occurring within our normal distribution and (b) enables us to compare two scores that are from different normal distributions
In ΔFGH, f = 690 cm, h = 860 cm and ∠H=52°. Find all possible values of ∠F, to the nearest 10th of a degree. the answer is 39.2
Answer:
39.2
Step-by-step explanation:
delta math
Answer:
39.2
Step-by-step explanation:
see attached pic
2) Chris is 30 years old male with no children
and has some dental issues. Which policy
would be best for him?
Answer:
but what kinda ookucy do i have to choose from tho
Factor 6 x2 - 17 x + 5. (3x - 1)(2x - 5) (3x - 5)(2x - 1) (2x - 1)(3x + 5)
Answer:
c-2=3
Step-by-step explanation:
Answer: (3x−1)(2x−5)
Step-by-step explanation: