Answered: c. Do you think that the assumption… | bartleby

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 25SGR

See similar textbooks

Related questions

Question

i need the answer quickly

A large family-held department store had the business objective of improving its response to complaints The variatle of interest was defined as the nm
between when the complaint was made and when it was resolved Data were collected from 40 complaints that were made in the last year Use the dat
(a) through (d) below
I Click the icon to view the data table
a Construct a 95% confidence interval estimate for the population mean number of days between the receipt of a complaint and the resolution of the or
The 95% confdence interval estimate is from 28.4 days to 53.1 days
(Round to one decimal place as needed.)
b. What assumption must you make about the population distribution in order to construct the confidence interval estimate in (a)?
A The number of days to resolve complaints follows the I distribution
OB The number of complaints per day follows the t distribution
C The number of complainte per day is normally distributed
D The number of days to resolve complaints is normally distributed.
c. Do you thinik that the assumption needed in order to construct the confidence interval estimate in (a) is valid? Explain
O A Yes, the data suggest the population distnbution approximately follows the I distribution.
O B. No, the data suggest the population distribution is skewed to the right
OC. Yes, the data suggest the population distribution is approximately normal.
O D. No, the data suggest the population distribution is skewed to the left
Complaint Data
Days Between Complaint and Resolution of Complaint
7
24
20
19
26
93
10
64
45
162
32
28
24
33
69
16
18
1
34
115
17
7
64
2
27
111
8
45
152
16
26
26
37
12
26
14
81
49
42
29

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

The National Association of Home Builders provided data on the cost of the most popular home remodeling projects. Sample data on cost in thousands of dollars for two types of remodeling projects are as follows. a) Develop a point estimate of the difference between the population mean remodeling costs for the two types of projects.b) Develop a 90% confidence interval for the difference between the two population means.
A workout coach believes that walking every day can produce the same health benefits as jogging. Ten volunteers are paired based on significant characteristics, and half of the group is asked to walk every day and half of the group is asked to jog every day. The amounts of weight lost (in pounds) over a 30-day period are recorded in the following table. Construct a 90%90% confidence interval for the true mean difference between the amount of weight lost by jogging and the amount of weight lost by walking. Assume that the population distribution of the paired differences is approximately normal. Round to one decimal place. Weight Loss (in pounds) Pair 1 2 3 4 5 Walking 9 8 10 7 5 Jogging 14 13 12 9 10
As part of the National Health and Nutrition Examination Survey, the Department of Health and Human Services obtained self-reported heights and measured heights for males aged 12 – 16. All measurements are in inches. Using a 0.05 significance level, is there sufficient evidence to support the claim that there is a difference between self-reported heights and measured heights of males aged 12 – 16? Also be sure to include the confidence interval. What does this suggest about the average difference between self-reported and actual heights? Write an APA-style results section for what you find. Reported: 68 71 63 70 71 60 65 64 54 63 66 72 Measured: 67.9 69.9 64.9 68.3 70.3 60.6 64.5 67 55.6 74.2 65 70.8
A manufacturer of cream filled donuts collected data from its automatic filling process. The amount of cream inserted into the donuts is normally distributed. To make sure that the automatic filling process is on target, quality control inspectors take a sample of 25 donuts. The correct value of t to construct a 99% confidence interval for the true mean amount of cream filling is _______. Question content area bottom Part 1 A. 2.787 B. 1.711 C. 2.797 D. 2.060 E. 1.318
A Tootsie Pop is a hard candy with a chocolate center. A famous commercial once asked:“How many licks to the center of Tootsie Pop?” In an attempt to answer this question, Cory Heid of Siena Heights University asked 90 volunteers to count the number of licks required before reaching the chocolate center. The sample mean number of licks required was 356.1 with a sample standard deviation of 185.7. The population mean number of licks is to be estimated with 95 percent confidence interval. a. The confidence interval isb.We can state with 95 percent confidence that c. How many volunteers should be selected if we wish to construct a 99 percent confidence interval for the population mean number of licks and maintain the margin of error from part? For this calculation, assume that the population standard deviation is 185.7
Yost Transportation Research plans to estimate the average monthly transportation costs for workers who commute daily from northern New Jersey into New York City. Study coordinators want to be able to construct a 95% confidence interval that is no wider than ±$2. How many commuters should be included in the sample? Assume a pilot sample gives an estimate of $30 for the population standard deviation.
The Health Care Cost Institute tracks health care expenditures for beneficiaries under the age of 65 who are covered by employ ersponsored private health insurance. The data contained in the file DrugCost are con sistent with the institute’s findings concerning annual prescription costs per employee. Analyze the data using Excel and answer the following questions. a. Develop a 90% confidence interval for the annual cost of prescription drugs. b. Develop a 90% confidence interval for the amount of outofpocket expense per employee c. What is your point estimate of the proportion of employees who incurred…

Recommended textbooks for you

Glencoe Algebra 1, Student Edition, 9780079039897…

Glencoe Algebra 1, Student Edition, 9780079039897…

Algebra

ISBN:

9780079039897

Author:

Carter

Publisher:

McGraw Hill

Glencoe Algebra 1, Student Edition, 9780079039897…

Glencoe Algebra 1, Student Edition, 9780079039897…

Algebra

ISBN:

9780079039897

Author:

Carter

Publisher:

McGraw Hill

SEE MORE TEXTBOOKS