Question: A normal distribution has a mean of 54

A normal distribution has a mean of µ = 54 and a standard deviation of σ = 6.
a. What is the probability of randomly selecting a score less than X = 51?
b. What is the probability of selecting a sample of
n = 4 scores with a mean less than µ = 51?
c. What is the probability of selecting a sample of
n = 36 scores with a mean less than µ = 51?

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  • CreatedSeptember 22, 2015
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