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Ho: ? H:? v Determine if this test is left-tailed, right-tailed, or two-tailed. O two-tailed O left-tailed O right-tailed Should the standard normal (2) distribution or Student's (t) distribution be used for this test? O The standard normal (z) distribution should be used O The Student's t distribution should be used Determine the critical value(s) for this hypothesis test. Round the solution(s) to four decimal places. If more than one critical value exists, enter the solutions using a comma-separated list. Determine the test statistic. Round the solution to four decimal places. Determine the appropriate conclusion for this hypothesis test. O The sample data provide sufficient evidence to reject the null hypothesis that the average food delivery time from this company is 32.4 minutes or less and thus we conclude that average food delivery time is likely greater than 32.4 minutes. O The sample data do not provide sufficient evidence to reject the null hypothesis that the average food delivery time from this company is 32.4 minutes or less and thus we conclude that average food delivery time is likely 32.4 minutes or less, as advertised.

Ho: ? H:? v Determine if this test is left-tailed, right-tailed, or two-tailed. O two-tailed O left-tailed O right-tailed Should the standard normal (2) distribution or Student's (t) distribution be used for this test? O The standard normal (z) distribution should be used O The Student's t distribution should be used Determine the critical value(s) for this hypothesis test. Round the solution(s) to four decimal places. If more than one critical value exists, enter the solutions using a comma-separated list. Determine the test statistic. Round the solution to four decimal places. Determine the appropriate conclusion for this hypothesis test. O The sample data provide sufficient evidence to reject the null hypothesis that the average food delivery time from this company is 32.4 minutes or less and thus we conclude that average food delivery time is likely greater than 32.4 minutes. O The sample data do not provide sufficient evidence to reject the null hypothesis that the average food delivery time from this company is 32.4 minutes or less and thus we conclude that average food delivery time is likely 32.4 minutes or less, as advertised.

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
Section10.6: Summarizing Categorical Data
Problem 31PPS
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A food delivery service claims that it delivers orders to customers in 32.4 minutes or less, on average. However, many people report that their recent orders have taken much longer to arrive. A secret shopping firm would like to test the company's claim. The firm collected data from 187 randomly selected orders and found that the average delivery time was 32.79 minutes with a standard deviation of 3.84 minutes. Using α Η greater than 32.4 minutes. Use the critical value method. 0.05, test the hypothesis that the average delivery time from this food delivery service is State the null and alternative hypothesis for this test. Ho: ? v H1: ? Determine if this test is left-tailed, right-tailed, or two-tailed. O two-tailed O left-tailed O right-tailed Should the standard normal (z) distribution or Student's (t) distribution be used for this test? O The standard normal (z) distribution should be used O The Student's t distribution should be used Determine the critical value(s) for this hypothesis test. Round the solution(s) to four decimal places. If more than one critical value exists, enter the solutions using a comma-separated list. Determine the test statistic. Round the solution to four decimal places. Determine the appropriate conclusion for this hypothesis test. O The sample data provide sufficient evidence to reject the null hypothesis that the average food delivery time from this company is 32.4 minutes or less and thus we conclude that average food delivery time is likely greater than 32.4 minutes.
Transcribed Image Text:A food delivery service claims that it delivers orders to customers in 32.4 minutes or less, on average. However, many people report that their recent orders have taken much longer to arrive. A secret shopping firm would like to test the company's claim. The firm collected data from 187 randomly selected orders and found that the average delivery time was 32.79 minutes with a standard deviation of 3.84 minutes. Using α Η greater than 32.4 minutes. Use the critical value method. 0.05, test the hypothesis that the average delivery time from this food delivery service is State the null and alternative hypothesis for this test. Ho: ? v H1: ? Determine if this test is left-tailed, right-tailed, or two-tailed. O two-tailed O left-tailed O right-tailed Should the standard normal (z) distribution or Student's (t) distribution be used for this test? O The standard normal (z) distribution should be used O The Student's t distribution should be used Determine the critical value(s) for this hypothesis test. Round the solution(s) to four decimal places. If more than one critical value exists, enter the solutions using a comma-separated list. Determine the test statistic. Round the solution to four decimal places. Determine the appropriate conclusion for this hypothesis test. O The sample data provide sufficient evidence to reject the null hypothesis that the average food delivery time from this company is 32.4 minutes or less and thus we conclude that average food delivery time is likely greater than 32.4 minutes.
Ho: ? H:? v Determine if this test is left-tailed, right-tailed, or two-tailed. O two-tailed O left-tailed O right-tailed Should the standard normal (z) distribution or Student's (t) distribution be used for this test? O The standard normal (z) distribution should be used O The Student's t distribution should be used Determine the critical value(s) for this hypothesis test. Round the solution(s) to four decimal places. If more than one critical value exists, enter the solutions using a comma-separated list. Determine the test statistic. Round the solution to four decimal places. Determine the appropriate conclusion for this hypothesis test. O The sample data provide sufficient evidence to reject the null hypothesis that the average food delivery time from this company is 32.4 minutes or less and thus we conclude that average food delivery time is likely greater than 32.4 minutes. O The sample data do not provide sufficient evidence to reject the null hypothesis that the average food delivery time from this company is 32.4 minutes or less and thus we conclude that average food delivery time is likely 32.4 minutes or less, as advertised. O The sample data do not provide sufficient evidence to reject the alternative hypothesis that the average food delivery time is greater than 32.4 minutes and thus we conclude that the average food delivery time from this company is likely greater than 32.4 minutes. O The sample data provide sufficient evidence to reject the alternative hypothesis that the average food delivery time is greater than 32.4 minutes and thus we conclude that the average food delivery time from this company is 32.4 minutes or less, as advertised.
Transcribed Image Text:Ho: ? H:? v Determine if this test is left-tailed, right-tailed, or two-tailed. O two-tailed O left-tailed O right-tailed Should the standard normal (z) distribution or Student's (t) distribution be used for this test? O The standard normal (z) distribution should be used O The Student's t distribution should be used Determine the critical value(s) for this hypothesis test. Round the solution(s) to four decimal places. If more than one critical value exists, enter the solutions using a comma-separated list. Determine the test statistic. Round the solution to four decimal places. Determine the appropriate conclusion for this hypothesis test. O The sample data provide sufficient evidence to reject the null hypothesis that the average food delivery time from this company is 32.4 minutes or less and thus we conclude that average food delivery time is likely greater than 32.4 minutes. O The sample data do not provide sufficient evidence to reject the null hypothesis that the average food delivery time from this company is 32.4 minutes or less and thus we conclude that average food delivery time is likely 32.4 minutes or less, as advertised. O The sample data do not provide sufficient evidence to reject the alternative hypothesis that the average food delivery time is greater than 32.4 minutes and thus we conclude that the average food delivery time from this company is likely greater than 32.4 minutes. O The sample data provide sufficient evidence to reject the alternative hypothesis that the average food delivery time is greater than 32.4 minutes and thus we conclude that the average food delivery time from this company is 32.4 minutes or less, as advertised.
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