9. Ten married couples are randomly selected. Their weekly TV viewing times, in
ID: 3374979 • Letter: 9
Question
9. Ten married couples are randomly selected. Their weekly TV viewing times, in hours, are as follows.
Couple Husband Wife Couple Husband Wife 1 21 24 6 38 45 2 56 55 7 27 29 3 34 55 8 30 41 4 30 34 9 31 37 5 41 32 10 30 35
Which hypothesis test would you choose to test the hypothesis that the mean amount of TV married men watch is less than the mean amount of TV married women watch? If necessary, it is OK to assume samples are from normal distributions.
a. Two independent samples t test
b. Two sample paired t test
c. One sample t test
d. Two independent proportions z test
e. One proportion z test
Explanation / Answer
Answer is (a)
Here , sample size is small and population standard deviation is unknown for both data set.
Hence we use two sample t test.
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