Question

A doctor claims that teenage boys get more screen time as teenage girls. A study asked 15 teenage boys, and 18 teenage girls, how many hours of screen time they get per day, on average. The results are below.

boys' screen time	girls' screen time
5	3
4	4
6	5
5	4
4	3
5	4
6	3
3	2
3	1
5	4
4	3
6	2
5	3
6	5
4	4
	5
	4
	3

Sample Mean: (Boys) 4.733 and Sample Mean: (Girls) is 3.444

Standard Deviation: (Boys) is 1.0328 and Standard Deviation: (Girls) is 1.0966

The combined standard error for the difference between the two sample means is 1.06828

1. What is the bound of the critical region, for α = 0.10 ? _________

2.  What is the test static? _____

3. Is the null hypothesis rejected? _____

4. Is the claim supported? _____

Answer 1