Please follow the four steps of hypothesis testing to show your process of decision. T table is attached.

1. Suppose you want to determine whether women and men experience anxiety differently in response to the dissolution of romantic relationships. You administer Zung's self-rating anxiety scale to a random sample of 20 men and 20 women who just went through a break-up.

M s n

Women: 35.5 14.66 20

Men: 49.3 18.50 20

(s represents standard deviation. In order to calculate t value, you need to transfer it back to SS.)

What are the null and alternative hypothesis?

Find the critical value at =0.05

Calculate your test value.

Conclusion.

2.Alcohol affects spatial ability in rats. Researchers have rat run through a maze looking for cheese, first sober, then drunk, and count the number of errors they made.

rat	Sober	Drunk	D(difference)
1	2	4
2	1	4
3	2	4
4	1	3
5	3	5
6	4	6
7	3	5
8	2	4
9	4	5

State your hypotheses:

Find critical value at =0.05

Calculate t

Conclusion.