In: Statistics and Probability
The manager of a computer software company wishes to study the number of hours senior executives by type of industry spend at their desktop computers. The manager selected a sample of five executives from each of three industries. At the .05 significance level, can she conclude there is a difference in the mean number of hours spent per week by industry?
Banking |
Retail |
Insurance |
32 |
28 |
30 |
30 |
28 |
28 |
30 |
26 |
26 |
32 |
28 |
28 |
30 |
30 |
30 |
PLEASE SHOW ANSWER WITHOUT USING MINI TAB OR SOFTWARE