A random sample of size n 350 is taken from a population of

A random sample of size n = 350 is taken from a population of size N = 7,300 with mean = 73 and variance ² = 152. Use Table 1.

Is it necessary to apply the finite population correction factor?

Calculate the expected value and the standard error of the sample mean. (Negative values should be indicated by a minus sign. Round \"standard error\" to 2 decimal places.)

What is the probability that the sample mean is between 75 and 71? (Round “z” value to 2 decimal places, and final answer to 4 decimal places.)

What is the probability that the sample mean is greater than 72?

(Round “z” value to 2 decimal places, and final answer to 4 decimal places.)

Solution