Experian Marketing Services reported that the typical American spends 144 minutes (2.4) hours per day accessing the Internet through a mobile device. You wonder if males and females spend differing amounts of time per day accessing the Internet through a mobile device. You select a sample of 60 friends and family (30 males and 30 females), collect times spent per day accessing the Internet through a mobile device (in minutes), and store the data collected in the table below.

a. Using a 0.05 level of significance, is there evidence of a difference in the variances of time spent per day accessing the Internet via mobile device between males and females?

b. On the basis of the results in (a), which t test should be used to compare the means of the males and females? Discuss.

Gender	Minutes
F	72
F	144
F	48
F	72
F	36
F	360
F	44
F	30
F	432
F	24
F	288
F	144
F	144
F	240
F	432
F	144
F	144
F	144
F	576
F	216
F	72
F	72
F	144
F	288
F	144
F	36
F	288
F	48
F	288
F	144
M	432
M	2304
M	108
M	72
M	24
M	12
M	1728
M	720
M	144
M	432
M	432
M	432
M	576
M	576
M	432
M	144
M	216
M	576
M	96
M	288
M	48
M	144
M	144
M	432
M	144
M	36
M	72
M	24
M	288
M	240