1. Suppose a professor gives an exam to a class of 40 students and the scores are as follows.

35	44	46	47	47	48	49	51	53	54
55	55	57	57	57	58	59	59	59	59
60	60	60	60	60	62	62	62	64	68
69	70	72	73	73	75	75	77	82	88

a. Find each of the following
Median:
Mean:

Standard deviation:

Z -score for a student who originally scored 54 on the exam:

b. Create a histogram of the scores and comment on the shape of the distribution. (Use a separate page if necessary.)