Question: 3 a particular group of men have heights with a...

3 .A particular group of men have heights with a mean of 183 cm and a standard deviation of 6 cm. Bill had a height of 188 cm.

a. What is the positive difference between Bill​'s height and the​ mean?

b. How many standard deviations is that​ [the difference found in part​ (a)]?

c. Convert Bill​'s height to a z score

. d. If we consider​ "usual" heights to be those that convert to z scores between minus 2 and​ 2, is Bill​'s height usual or​ unusual?