Using the data below, test the null hypothesis that the variance
in the Close Ratio for the sample of employees is at most 1.5% at
5% significance level.
Years Employed
Gender
Certified
Prior Background
Close Ratio
Sales
7
M
Y
Y
44.40%
$ 201,500
8
M
Y
Y
54.20%
$ 129,000
4
M
Y
Y
60.70%
$ 101,100
8
M
N
N
42.60%
$ 99,700
6
M
Y
N
68.30%
$ 98,100
6
M
N
N
37.90%
$ 93,900
2
M
N
N
29.50%
$ 90,800
2...