Answered: You are the manager of a restaurant for…

Name: You are the manager of a restaurant for a fast-food franchise. Last
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: You are the manager of a restaurant for a fast-food franchise. Last month, the mean waiting time at the drive-through window for branches in your geographical region, as measured from the time a customer places an order until the time the custome

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

Related questions

Topic Video

Question

You are the manager of a restaurant for a fast-food franchise. Last month, the mean waiting time at the drive-through window for branches in your geographical region, as measured from the time a customer places an order until the time the customer receives the order, was 3.6 minutes. You select a random sample of 81 orders. The sample mean waiting time is 3.38 minutes, with a sample standard deviation of 0.9 minute.

1. At then 0.01 level of significance, is there evidence that the population mean waiting time is different from 3.6 minutes? State the null and alternative hypotheses

H0:

H1:

Determine the test statistic.

The test statistic is ____

the t critical is t.025,63 = 1.9983 since the t tstat is not more than t critical do not reject

State the conclusion.

__A___ H0. There is __B___ evidence to conclude that the population mean waiting time is different from 3.6 minutes.

A: Reject or do not reject

B: sufficient or insufficient

2. Because the sample size is 81, do you need to be concerned about the shape of the population distribution when conducting the t test in (a)? Explain. Choose the correct answer below.

A. Yes, because n is equal to 81, the sampling distribution of the t test cannot be determined. In general, the t test requires a larger sample size.

B. No, because n is equal to 81, the sampling distribution of the t test is approximately normal. In general, the t test is appropriate for a large sample size.

C. Yes, because n is equal to 81, the sampling distribution of the t test cannot be determined. In general, the t test is only appropriate for a normally distributed sample.

D. No, because n is equal to 81, the sampling distribution of the t test is approximately normal. In general, the t test is appropriate for this sample size since n > 30

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Means$

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