Is there a significant difference between boys’ and girls’ UI1 test scores, statistics homework help

An IBM internship student designed two different user interfaces (e.g. UI1 and UI 2) for help age of 6-7 students to solve simple math problems. She would like to know which interface is better for improving their skills on solving math problems. The collected data include the attributes as UI1 test score, UI2 test score, Number of Electric devices they have at home, Age, Student Gender

UI 1	UI 2	Devices	Age	Gender
5	18	4	6	boy
15	20	3	7	girl
15	21	4	7	boy
14	22	5	7	boy
12	15	4	6	girl
10	20	3	6	girl
14	23	3	7	boy
12	25	4	6	girl
16	21	4	7	girl
5	19	5	6	boy
6	18	3	6	boy
14	26	5	7	girl
15	25	4	7	girl
7	28	5	6	boy
9	22	3	6	girl
6	29	4	7	boy
15	24	4	6	girl
11	20	3	6	girl
6	21	5	6	boy
15	23	4	7	girl
15	25	6	7	boy
5	22	4	6	boy
7	24	3	6	girl
16	15	5	7	girl
15	24	5	7	boy
15	23	6	7	boy

For this assignment, you need to apply t-test to find answers for the following research questions:

1. Is there a significant difference between boys’ and girls’ UI1 test scores?
2. Is there a significant difference between boys’ and girls’ UI2 test scores?
3. Is there a significant difference between 6-year-olds’ and 7-year-olds’ UI1 scores?
4. Is there a significant difference between 6-year-olds’ and 7-year-olds’ UI2 scores?
5. Is there a significant difference between UI1’s scores with respect to the number of devices they have at home?
6. Is there a significant difference between UI2’s scores with respect to the number of devices they have at home?
7. Is there a significant difference between students’ UI1 and UI2 scores?

5 points per each question (you need to provide null & alternative hypothesis and both p- & t-value to get full credits).