Question 1 0/1 pts It is desired to compare the average amount of time male and

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Question 1 0/1 pts It is desired to compare the average amount of time male and female college students exercise per week. Random and independent samples were selected and the data was analyzed in the Statistix software and the following printout was generated Two-Sample T Tests for Exercise by Gender Gender Female Male Difference -2.610742417 0.9371 T-Tests for Mean Difference Null Hypothesis: difference Alternative Hyp: difference N Mean SD SE 2 5.7143 3.7370 0.5766 40 8.3250 4.7143 0.7454 Lower Upper 95% CL Method Variances DFT Pooled 95% CL Equal 80 -2.790.0067-4.4756 0.7458 Satterthwaite Unequal 74.3 -2.77 0.0071 4.4884 -0.7331 Homogeneity of Variances DF F P Folded F Test 941 1.59 0.0723 If you were conducting a test of hypothesis to determine if there is a difference in the mean exercise times of all male and female students, which p-value would you interpret? 1

Explanation / Answer

When sample sizes are large enough i.e. n >30 we don't required pooled estimate of variances but can be analysed with unpooled variance estimate so p value =0.0071 to be used

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