The ages, in years, of the faculty members of a college biology department are

as follows:

32.2

37.5

41.7

53.8

50.2

48.2

46.3

65.0

44.8

a.

Calculate the mean age of these nine faculty members. [2]

b.

Determine the median of the ages. [2]

c.

If the person 65.0 years of age retires and is replaced by a 46.5 years

old member, what is the new mean age? [2]

d.

What is the new median age?