Two-Sample T-Test Conditions
A researcher is comparing the mean daily calorie intake for two independent groups of athletes. For a sample of 15 athletes from Group 1, the mean intake was 2,850 calories with a standard deviation of 320 calories. For an independent sample of 12 athletes from Group 2, the mean intake was 2,650 calories with a standard deviation of 280 calories. Which condition for conducting a two-sample t-test for a difference in means has not been met?
A
The population variances are not equal
B
The sampling distribution is not approximately normal
C
The sample sizes are too small
D
The samples are not independent
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