The following are the details of working hours in the classroom per week of male and female faculty working in the area of Computer Science and Information Technology at Tribhuvan University.

	Male Faculty	Female Faculty
Sample Size	60	30
Average working hours per week	12	9
The standard deviation of a working hour per week	4	3

Apply independent t-test to examine the average working hour in the classroom per week is significantly different between male and female faculty, at 1% level of significance. State also null and alternative hypotheses appropriately.