1. A normal distribution has a mean of μ = 60 and a standard deviation of...
1. A normal distribution has a mean of μ = 60 and a standard deviation of σ = 12. For each of the following samples, compute the z-score for the sample mean and determine whether the sample mean is a typical, representative value or an extreme value for a sample of this size.
a. M = 53 for n = 4 scores
σ/ √n= 12/√4 =6
z=(53-60)/6 = -1.17
b. M = 53 for n = 9 scores
σ/ √n= 12/√9=4
z=(53-60)/4 = -1.75
Question) For each of the sample means in problem 1, use the z-score that you calculated to find the probability of obtaining a mean that is greater than the M given to you. Similarly, find the probability of obtaining a mean that is less than M.
Number one correct? And how do solve number 2?
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