A researcher wants to test to see if husbands are significantly older than their wives. To do this, he collects the ages of husbands and pairs them with the ages of their respective wives for a random set of married couples. Find the test statistic and degrees of freedom for an appropriate hypothesis test using the data set below. Let the difference d for each couple be computed as d=husband−wife. Assume that the ages are normally distributed. Round the test statistic to three decimal places. Husband Wife42 3944 4346 4251 4834 3036 3862 5947 5064 5841 4450 5154 54
A researcher wants to test to see if husbands are significantly older than their wives. To do this, he collects the ages of husbands and pairs them with the ages of their respective wives for a random set of married couples. Find the test statistic and degrees of freedom for an appropriate hypothesis test using the data set below. Let the difference d for each couple be computed as d=husband−wife. Assume that the ages are normally distributed. Round the test statistic to three decimal places.
Husband Wife
42 39
44 43
46 42
51 48
34 30
36 38
62 59
47 50
64 58
41 44
50 51
54 54
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