References about this question: Chi-Square test

Question: A study was conducted on the effects of lack of REM sleep on the ability to recall a list of words. The study found that, of participants deprived of normal REM sleep, 4 scored high on memory recall, 7 scored moderately, and 9 scored low. Of participants who received normal sleep, 10 scored high, 9 moderately, and 1 low. Do these results suggest that REM sleep is related to how people score on the memory recall? Carry out a Chi Square Test for Independence. (Use the .01 significance level.)What is the expected frequency for "scored moderately" under the deprived condition?

a. 7

b. 8

c. 1

d. 5

e. 4

In the above study, what is X² ?

a. 9.24

b. 9.01

c. 8.21

d. 6.00

e. 4.41

f. 5.56

What is the cutoff?

a. 5.992

b. 3.841

c. 11.345

d. 9.211

e. 6.635