The building specifications in a certain city require that the sewer pipe used in residential areas have
Question:
The building specifications in a certain city require that the sewer pipe used in residential areas have a mean breaking strength of more than 2,500 pounds per lineal foot. A manufacturer who would like to supply the city with sewer pipe has submitted a bid and provided the following additional information: An independent contractor randomly selected seven sections of the manufacturer’s pipe and tested each for breaking strength. The results (pounds per lineal foot) follow:
a. Is there sufficient evidence to conclude that the manufacturer’s sewer pipe meets the required specifications? Use a significance level of α = .10.
b. Find the value of β for μa = 2575. What is the power of the test?
c. Find the value of β for μa = 2800.
d. Find the power of the test for μa = 2800.
Step by Step Answer:
a We can use a onesample ttest to determine if the sample mean breaking strength of the sewer pipe is significantly different from 2500 pounds per lin...View the full answer
Statistics For Engineering And The Sciences
ISBN: 9781498728850
6th Edition
Authors: William M. Mendenhall, Terry L. Sincich
