b) A random sample of size n,= 25 is selected from a normal population with a mean of 95 and a standard deviation of 7. A second random sample of size n.=16 is taken from another normal population with mean 80 and standard deviation 13. Let X, and X, be two sample means. Find the probability that 12

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
Problem 27T
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b) A random sample of size n,= 25 is selected from a normal population with a mean of
95 and a standard deviation of 7. A second random sample of size n,=16 is taken from
another normal population with mean 80 and standard deviation 13. Let X, and X, be two
sample means. Find the probability that 12<X; - X, $13.
Transcribed Image Text:b) A random sample of size n,= 25 is selected from a normal population with a mean of 95 and a standard deviation of 7. A second random sample of size n,=16 is taken from another normal population with mean 80 and standard deviation 13. Let X, and X, be two sample means. Find the probability that 12<X; - X, $13.
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