The given data set represents a sample of the number of phone lines in use at various times at a customer service center.

3,1,4,6,1,8

Find the value of the mean minus the median.

Select one:

a.-1.00

b..33

c..50

d.-.17

e..83

A hypothesis test is conducted to determine whether the percentage of US adults that think marijuana should be illegal is less than 40%.A random sample of 400 US adults includes 144 that think marijuana should be illegal.Find the value of the test statistic.

Select one:

a.-1.67

b.-1.63

c.1.63

d.-1.96

e.1.67