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waiting time at the​ drive-through of a​ fast-food restaurant from the time an order is placed to the time the order is received is 83.8 seconds. A manager devises a new​ drive-through system that he believes will decrease wait time. As a​ test, he initiates the new system at his restaurant and measures the wait time for 10 randomly selected orders. The wait times are provided in the table to the right. Complete parts​ (a) and​ (b) below.

waiting time at the​ drive-through of a​ fast-food restaurant from the time an order is placed to the time the order is received is 83.8 seconds. A manager devises a new​ drive-through system that he believes will decrease wait time. As a​ test, he initiates the new system at his restaurant and measures the wait time for 10 randomly selected orders. The wait times are provided in the table to the right. Complete parts​ (a) and​ (b) below.

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
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waiting time at the​ drive-through of a​ fast-food restaurant from the time an order is placed to the time the order is received is

83.8

seconds. A manager devises a new​ drive-through system that

he

believes will decrease wait time. As a​ test,

he

initiates the new system at

his

restaurant and measures the wait time for

10

randomly selected orders. The wait times are provided in the table to the right. Complete parts​ (a) and​ (b) below.

(b) Is the new system effective? Conduct a hypothesis test using the P-value approach and a level of significance of a = 0.01. First determine the appropriate hypotheses. Ho: H = 83.8 * 83.8 Find the test statistic. to = (Round to two decimal places as needed.) Find the P-value. The P-value is (Round to three decimal places as needed.) Use the a = 0.01 level of significance. What can be concluded from the hypothesis test? O A. The P-value is less than the level of significance so there is not sufficient evidence to conclude the new system is effective. O B. The P-value is less than the level of significance so there is sufficient evidence to conclude the new system is effective. O C. The P-value is greater than the level of significance so there is sufficient evidence to conclude the new system is effective. O D. The P-value is greater than the level of significance so there is not sufficient evidence to conclude the new system is effective.
Transcribed Image Text:(b) Is the new system effective? Conduct a hypothesis test using the P-value approach and a level of significance of a = 0.01. First determine the appropriate hypotheses. Ho: H = 83.8 * 83.8 Find the test statistic. to = (Round to two decimal places as needed.) Find the P-value. The P-value is (Round to three decimal places as needed.) Use the a = 0.01 level of significance. What can be concluded from the hypothesis test? O A. The P-value is less than the level of significance so there is not sufficient evidence to conclude the new system is effective. O B. The P-value is less than the level of significance so there is sufficient evidence to conclude the new system is effective. O C. The P-value is greater than the level of significance so there is sufficient evidence to conclude the new system is effective. O D. The P-value is greater than the level of significance so there is not sufficient evidence to conclude the new system is effective.
105.0 79.2 67.3 96.4 56.8 85.9 74.3 71.1 64.0 80.0
Transcribed Image Text:105.0 79.2 67.3 96.4 56.8 85.9 74.3 71.1 64.0 80.0
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