Question

In a recent survey, a group of teenagers was asked to indicate how many hours they spent playing video games in a typical week. After dividing the data by gender, researchers are left with the following data:

1. BY HAND: Calculate the mean hours spent playing video games and the standard deviation for both males (n = 30) and females (n = 22)
2. BY HAND: compare the means and see if there is a significant difference (with 95% confidence, z = 1.96) between the average hours spent playing video games for males and females.

   Hours Spent Playing Video Games (MALE)	Hours Spent Playing Video Games (FEMALE)
   22	5
   6	2
   26	1
   4	3
   11	7
   29	25
   14	10
   27	3
   3	2
   16	0
   17	1
   17	6
   14	3
   15	15
   24	27
   12	1
   26	0
   27	3
   26	4
   16	1
   19	21
   24	30
   19	-
   17	-
   11	-
   23	-
   14	-
   29	-
   28	-
   1	-

Answer 1