If all the possible random samples of size n 5 25 are selected from a population with m 5 80 and s 5 10 and the mean is computed for each sample, then what shape is expected for the distribution of sample means?

a. The sample means tend to form a normal-shaped distribution.

b. The distribution of sample means will have the same shape as the sample distribution.

c. The sample will be distributed evenly across the scale, forming a rectangularshaped distribution.

d. There are thousands of possible samples and it is impossible to predict the shape of the distribution.