A random sample of size ?1 = 16 is selected from a normal population with a mean of 75 and a standard deviation of 8. A second random sample of size ?2 = 9 is taken from another normal population with mean 70 and standard deviation 12. Let ?̅1 and ?̅2 be the two sample means. Find the probability that ?̅1 − ?̅2 exceeds 4. Use the Scientific Method of Answering (Given, Required, Formula and Solution).
A random sample of size ?1 = 16 is selected from a normal population with a mean of 75 and a standard deviation of 8. A second random sample of size ?2 = 9 is taken from another normal population with mean 70 and standard deviation 12. Let ?̅1 and ?̅2 be the two sample means. Find the probability that ?̅1 − ?̅2 exceeds 4. Use the Scientific Method of Answering (Given, Required, Formula and Solution).
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A random sample of size ?1 = 16 is selected from a normal population with a mean of 75 and a standard deviation of 8. A second random sample of size ?2 = 9 is taken from another normal population with mean 70 and standard deviation 12. Let ?̅1 and ?̅2 be the two sample means. Find the probability that ?̅1 − ?̅2 exceeds 4. Use the Scientific Method of Answering (Given, Required, Formula and Solution).
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