4) For a population has a mean of = 16 and a standard deviation of = 8 find the z-score corresponding to a sample mean of M= 20 for each of the following sample sizes.

n=4

5) For a population has a mean of = 16 and a standard deviation of = 8 find the z-score corresponding to a sample mean of M= 18 for each of the following sample sizes.

n=4

6) What is the probability of obtaining a sample mean greater than M=70 for a random sample of n= 16 scores selected from a normal population with a mean of =60 and a standard deviation of =20?

7) What is the probability of obtaining a sample mean greater than M=50 for a random sample of n= 4 scores selected from a normal population with a mean of =60 and a standard deviation of =20?