Homework Help is Here – Start Your Trial Now!
Math
Statistics
A cell phone manufacturer tests the battery lifetimes of its cell phones by recording the time it takes for the battery charges to run out while testers are playing games on the phones continuously. The manufacturer claims that the population mean of the battery lifetimes of all phones of their latest model is 6.39 hours. As a researcher for a consumer information service, you want to test that claim. To do so, you select a random sample of 45 cell phones of the manufacturer's latest model and record their battery lifetimes. Assume it is known that the population standard deviation of the battery lifetimes for that cell phone model is 2.73 hours. Based on your sample, follow the steps below to construct a 90% confidence interval for the population mean of the battery lifetimes for all phones of the manufacturer's latest model. Then.state whether the confidence interval you construct contradicts the manufacturer's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results from your random sample of 45 phones of the manufacturer's latest model. Sample standard Population standard Number of phones Sample mean deviation deviation Take Sample 45 5.97 2.48 2.73 Enter the values of the sample size, the point estimate for the population mean, the population standard deviation, and the critical value you need for your 90% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: ? Standard error: Point estimate: Critical values Population standard deviation: Margin of error: F0.00s -2.576 F0.010-2.326 Critical value Explanation Check 02021 McGraw Hill Education. All Rights Reserved Terms of Lhe Privacy AccesN

A cell phone manufacturer tests the battery lifetimes of its cell phones by recording the time it takes for the battery charges to run out while testers are playing games on the phones continuously. The manufacturer claims that the population mean of the battery lifetimes of all phones of their latest model is 6.39 hours. As a researcher for a consumer information service, you want to test that claim. To do so, you select a random sample of 45 cell phones of the manufacturer's latest model and record their battery lifetimes. Assume it is known that the population standard deviation of the battery lifetimes for that cell phone model is 2.73 hours. Based on your sample, follow the steps below to construct a 90% confidence interval for the population mean of the battery lifetimes for all phones of the manufacturer's latest model. Then.state whether the confidence interval you construct contradicts the manufacturer's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results from your random sample of 45 phones of the manufacturer's latest model. Sample standard Population standard Number of phones Sample mean deviation deviation Take Sample 45 5.97 2.48 2.73 Enter the values of the sample size, the point estimate for the population mean, the population standard deviation, and the critical value you need for your 90% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: ? Standard error: Point estimate: Critical values Population standard deviation: Margin of error: F0.00s -2.576 F0.010-2.326 Critical value Explanation Check 02021 McGraw Hill Education. All Rights Reserved Terms of Lhe Privacy AccesN

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Topic Video
Question
(b) Based on your sample, graph the 90% confidence interval for the population mean of the battery lifetimes for all phones of the manufacturer's latest model. • Enter the lower and upper limits on the graph to show your confidence interval. • For the point (), enter the manufacturer's claim of 6.39 hours. 90% confidence interval: 10.00 0.00 5.00 4.00 6.00 8.00 10.00 0.00 2.00 (c) Does the 90% confidence interval you constructed contradict the manufacturer's claim? Choose the best answer from the choices below. O No, the confidence interval does not contradict the claim. The manufacturer's claim of 6.39 hours is inside the 90% confidence interval. O No, the confid confidence interval, interval does not contradict the claim, The manufacturer's claim of 6.39 hours is outside the 90% O Yes, the confidence interval contradicts the claim. The manufacturer's claim of 6.39 hours is inside the 90% confidence interval. O Yes, the confidence interval contradicts the claim. The manufacturer's claim of 6.39 hours is outside the 90% confidence interval. Explanation Check O 2021 McGraw-Hill Education. All Rights Reserved Terms of Use MacBook Air 吕口, F2 F4 FB 23 2$ & * 2 3 4 5 6. 8 Q W E R Y D F G K C
Transcribed Image Text:(b) Based on your sample, graph the 90% confidence interval for the population mean of the battery lifetimes for all phones of the manufacturer's latest model. • Enter the lower and upper limits on the graph to show your confidence interval. • For the point (), enter the manufacturer's claim of 6.39 hours. 90% confidence interval: 10.00 0.00 5.00 4.00 6.00 8.00 10.00 0.00 2.00 (c) Does the 90% confidence interval you constructed contradict the manufacturer's claim? Choose the best answer from the choices below. O No, the confidence interval does not contradict the claim. The manufacturer's claim of 6.39 hours is inside the 90% confidence interval. O No, the confid confidence interval, interval does not contradict the claim, The manufacturer's claim of 6.39 hours is outside the 90% O Yes, the confidence interval contradicts the claim. The manufacturer's claim of 6.39 hours is inside the 90% confidence interval. O Yes, the confidence interval contradicts the claim. The manufacturer's claim of 6.39 hours is outside the 90% confidence interval. Explanation Check O 2021 McGraw-Hill Education. All Rights Reserved Terms of Use MacBook Air 吕口, F2 F4 FB 23 2$ & * 2 3 4 5 6. 8 Q W E R Y D F G K C
A cell phone manufacturer tests the battery lifetimes of its cell phones by recording the time it takes for the battery charges to run out while testers are playing games on the phones continuously. The manufacturer claims that the population mean of the battery lifetimes of all phones of their latest model is 6.39 hours. As a researcher for a consumer information service, you want to test that claim. To do s0, you select a random sample of 45 cell phones of the manufacturer's latest model and record their battery lifetimes. Assume it is known that the population standard deviation of the battery lifetimes for that cell phone model is 2.73 hours. Based on your sample, follow the steps below to construct a 90% confidence interval for the population mean of the battery lifetimes for all phones of the manufacturer's latest model. Then.state whether the confidence interval you construct contradicts the manufacturer's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results from your random sample of 45 phones of the manufacturer's latest model. Sample standard Population standard deviation Number of phones Sample mean deviation Take Sample 45 5.97 2.48 2.73 Enter the values of the sample size, the point estimate for the population mean, the population standard deviation, and the critical value you need for your 90% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: Standard error: Point estimate: Critical values Population standard deviation: Margin of error: F0.00s -2.576 F0.010-2.326 Critical valuO- Explanation Check 2021 McGraw HIlI Education. Al Rights Reserved Terms of Use Privacy I Accessibili MacBook Air %23 3 4 5 6. 7 8 Q E Y U D F G H K V olt command command optin
Transcribed Image Text:A cell phone manufacturer tests the battery lifetimes of its cell phones by recording the time it takes for the battery charges to run out while testers are playing games on the phones continuously. The manufacturer claims that the population mean of the battery lifetimes of all phones of their latest model is 6.39 hours. As a researcher for a consumer information service, you want to test that claim. To do s0, you select a random sample of 45 cell phones of the manufacturer's latest model and record their battery lifetimes. Assume it is known that the population standard deviation of the battery lifetimes for that cell phone model is 2.73 hours. Based on your sample, follow the steps below to construct a 90% confidence interval for the population mean of the battery lifetimes for all phones of the manufacturer's latest model. Then.state whether the confidence interval you construct contradicts the manufacturer's claim. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results from your random sample of 45 phones of the manufacturer's latest model. Sample standard Population standard deviation Number of phones Sample mean deviation Take Sample 45 5.97 2.48 2.73 Enter the values of the sample size, the point estimate for the population mean, the population standard deviation, and the critical value you need for your 90% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you are done, select "Compute". Sample size: Standard error: Point estimate: Critical values Population standard deviation: Margin of error: F0.00s -2.576 F0.010-2.326 Critical valuO- Explanation Check 2021 McGraw HIlI Education. Al Rights Reserved Terms of Use Privacy I Accessibili MacBook Air %23 3 4 5 6. 7 8 Q E Y U D F G H K V olt command command optin
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 6 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Proportions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS