# An experiment was conducted to compare the effectiveness of three training programs, A, B, and C, in

## Question:

a. Do the data provide sufficient evidence to indicate a difference in mean assembly times for people trained by the three programs? Give the p-value for the test and interpret its value.

b. Find a 99% confidence interval for the difference in mean assembly times between persons trained by programs A and B.

c. Find a 99% confidence interval for the mean assembly times for persons trained by program A.

d. Do you think the data will satisfy (approximately) the assumption that they have been selected from normal populations? Why?

MS Excel output for Exercise 11.12

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**Related Book For**

## Introduction To Probability And Statistics

**ISBN:** 9781133103752

14th Edition

**Authors:** William Mendenhall, Robert Beaver, Barbara Beaver