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The mean length of lumber is supposed to be 8.5 feet. A builder wants to check whether the shipment of lumber she receives has the correct length, so she conducts a hypothesis test. She measures 61 randomly selected pieces of lumber and finds they have a mean of 8.3 feet and standard deviation of 0.75 feet. Using R Studio Conduct a hypothesis test to see whether she is justified to believe that the average is shorter than 8.5 feet?

The mean length of lumber is supposed to be 8.5 feet. A builder wants to check whether the shipment of lumber she receives has the correct length, so she conducts a hypothesis test. She measures 61 randomly selected pieces of lumber and finds they have a mean of 8.3 feet and standard deviation of 0.75 feet. Using R Studio Conduct a hypothesis test to see whether she is justified to believe that the average is shorter than 8.5 feet?

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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The mean length of lumber is supposed to be 8.5 feet. A builder wants to check whether the shipment of lumber she receives has the correct length, so she conducts a hypothesis test. She measures 61 randomly selected pieces of lumber and finds they have a mean of 8.3 feet and standard deviation of 0.75 feet. Using R Studio Conduct a hypothesis test to see whether she is justified to believe that the average is shorter than 8.5 feet?
Transcribed Image Text:The mean length of lumber is supposed to be 8.5 feet. A builder wants to check whether the shipment of lumber she receives has the correct length, so she conducts a hypothesis test. She measures 61 randomly selected pieces of lumber and finds they have a mean of 8.3 feet and standard deviation of 0.75 feet. Using R Studio Conduct a hypothesis test to see whether she is justified to believe that the average is shorter than 8.5 feet?
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