HW-3

February 19, 2018 | Author: Tarique Hasan Khan | Category: Confidence Interval, Sample Size Determination, Estimation Theory, Scientific Method, Probability And Statistics

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Home Work 3 Chapter 8 Md. Tarique Hasan Khan ID: fl8214

8-12. The diameter of holes for a cable harness is known to have a normal distribution with 0.01 inch. A random sample of size 10 yields an average diameter of 1.5045 inch. Find a 99% two-sided confidence interval on the mean hole diameter

Answer: We eill have to find a 99% two-sided confidence interval on the mean hole diameter. 99% Two-sided CI on the diameter cable harness holes: where =1.5045 , s = 0.01 , n=10 and Z0.005 = 2.58 Now, - Z0.005 σ /√n

HW-3

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