Two students are interested in whether or not there is variation in their test scores for math class. There are 15 total math tests they have taken so far. The first student's grades have a standard deviation of 38.2. The second student's grades have a standard deviation of 22.5. The second student thinks his scores are lower. State the null and alternative hypotheses.

Step-by-step explanation:

From the question we are told that

Number of math tests n=15

standard deviation 1

standard deviation 1

Generally given the two tailed test the null hypothesis is given as

Generally given the two tailed test the null hypothesis is given as

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above

its c or d   take a lucky guess my dude