Answered: According to a study the average…

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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Question

According to a study the average waiting time at the drive thru window at Mc Donald as measured from the time a customer places an order until the time a customer receives his order was 3.7 minutes. The franchise personnel believes that the average waiting time is not equal to 3.7 minutes. He wanted to institute a new process intended to reduce waiting time. A random sample of 25 orders were collected, and yields a mean waiting time of 3.84 minutes with a sample standard deviation of 0.4 minute. Test this claim at α = 0.05 level of significance. The type of testing is a;

One tailed test to the right

One tailed test to the left

Two tailed test

The computed value of t-test using the appropriate test statistic formula is;

1.50

1.57

1.75

The critical value to be used in comparing the computed value of the t-test statistic is;

1.645

1.708

1.711

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