Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 148 millimeters, and a variance of 25. If a random sample of 50 steel bolts is selected, what is the probability that the sample mean would be less than 147.1 millimeters? Round your answer to four decimal places.
Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 148 millimeters, and a variance of 25. If a random sample of 50 steel bolts is selected, what is the probability that the sample mean would be less than 147.1 millimeters? Round your answer to four decimal places.
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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Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a
If a random sample of 50 steel bolts is selected, what is the probability that the sample mean would be less than 147.1 millimeters? Round your answer to four decimal places.
Expert Solution
Step 1
Given that
Mean=148, Variance=25, Sample size=50
Sample size is greater than 30, So the sampling distribution of sample mean is follows normal distribution
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