A psychologist is examining the educational advantages of a preschool program an

Question

A psychologist is examining the educational advantages of a preschool program and suspects that there will be significant (a =.01) differences in achievement among 4th graders based on whether or not they attended preschool. Twenty-three randomly selected 4th grade children are used in the study Twelve attended a preschool program and eleven did not. Based on the t-statistic you calculated above, what is the correct decision and appropriate conclusion for this independent samples t-test? Reject the null hypothesis: results suggest there is a significant difference in achievement based on preschool attendance. Reject the null hypothesis: results suggest there is not a significant difference in achievement based on preschool attendance. Fail to reject the null hypothesis: results suggest there is not a significant difference in achievement based on preschool attendance. Fail to reject the null hypothesis: results suggest there is a significant difference in achievement based on preschool attendance.

Explanation / Answer

as above shows significant differences

reject the null hypothessis; result suggest there is significantr difference in achievement .....

option A is correct

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