You may need to use the appropriate appendix table or technology to answer this question. CCN and ActMedia provided a television channel targeted to individuals waiting in supermarket checkout lines. The channel showed news, short features, and advertisements. The length of the program was based on the assumption that the population mean time a shopper stands in a supermarket checkout line is 8 minutes. A sample of actual waiting times will be used to test this assumption and determine whether actual mean waiting time differs from this standard. (a) Formulate the hypotheses for this application. O Ho: H = 8 H₂:μ#8 O Ho: #28 H₂: <8 OHO: H>8 H:H≤8 O Ho: H <8 H₂: 428 OHO: H≤8 H₂H>8 So (b) A sample of 125 shoppers showed a sample mean waiting time of 8.4 minutes. Assume a population standard deviation of a 3.2 minutes. What is the test statistic? (Round your answer to two decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value= (c) At a = 0.05, what is your conclusion? Do not reject Ho. There is sufficient evidence to conclude that the population mean waiting time differs from 8 minutes. fficient puidence to conclude that the population mean waiting time differs from 8 minutes. Activate Windows Go to Settings to activate Windows. FEDE PLA
You may need to use the appropriate appendix table or technology to answer this question. CCN and ActMedia provided a television channel targeted to individuals waiting in supermarket checkout lines. The channel showed news, short features, and advertisements. The length of the program was based on the assumption that the population mean time a shopper stands in a supermarket checkout line is 8 minutes. A sample of actual waiting times will be used to test this assumption and determine whether actual mean waiting time differs from this standard. (a) Formulate the hypotheses for this application. O Ho: H = 8 H₂:μ#8 O Ho: #28 H₂: <8 OHO: H>8 H:H≤8 O Ho: H <8 H₂: 428 OHO: H≤8 H₂H>8 So (b) A sample of 125 shoppers showed a sample mean waiting time of 8.4 minutes. Assume a population standard deviation of a 3.2 minutes. What is the test statistic? (Round your answer to two decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value= (c) At a = 0.05, what is your conclusion? Do not reject Ho. There is sufficient evidence to conclude that the population mean waiting time differs from 8 minutes. fficient puidence to conclude that the population mean waiting time differs from 8 minutes. Activate Windows Go to Settings to activate Windows. FEDE PLA
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
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