Question: Sales in a caf are normally distributed with a mean of $12 and a standard deviation of $4. A random sample of 25 sales is

Sales in a caf are normally distributed with a mean of $12 and a standard deviation of $4.

A random sample of 25 sales is drawn from the population. What is the probability that the mean of this sample is less than $14?

a, P(Z < 2.5) = 0.5987

b, P(Z < 2.5) = 0.9938

c, P(Z < 2.5) = 0.0062

d, P(Z < 2.5) = 0.4013

e, (Z < 2.5) = 1.0000

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