2) The data below reflect the number of vacation days that a sample of employees at a certain company have left to take before the end of the year. Complete parts a through c.

659311510

a. Compute the range for these sample data.

The range is

b. Compute the variance for these sample data.

The variance is

(Round to two decimal places asneeded.)

c. Compute the standard deviation for these sample data.

The standard deviation is

(Round to two decimal places asneeded.)

Suppose researchers are going to sample employees from the company for further study. Based on the relative frequency assessmentmethod, what is the probability that a randomly selected employee will be amale?

A.

0.1580

B.

0.4040

C.

0.5960

D.

0.1040

6) The time(in seconds) that it took for each of 16 vehicles to exit a parking lot in downtown Cincinnati is given below.

65

169

104

67

126

121

127

117

141

135

131

132

68

80

158

173

Compute themean, median, firstquartile, and third quartile for the sample data.

The mean is

(Do notround.)

The median is

(Do notround.)

The first quartile is

(Do notround.)

The third quartile is

(Do notround.)

7) Simple random sampling involves selecting members of the population in such as way that all members are equally likely to be chosen.

True

False