Given a population with a mean of = 105 and a variance of 2 =
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Given a population with a mean of μ = 105 and a variance of σ2 = 16, the central limit theorem applies when the sample size is n ≥ 25. A random sample of size n = 25 is obtained.
a. What are the mean and variance of the sampling distribution for the sample means?
b. What is the probability that x > 106?
c. What is the probability that 104 ≤ x̅ ≤ 106?
d. What is the probability that x ≤ 105.5?
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Related Book For
Statistics For Business And Economics
ISBN: 9781292315034
9th Global Edition
Authors: Paul Newbold, William Carlson, Betty Thorne
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