A
psychologist is examining the educational advantages of a preschool
program and suspects that there will be significant differences in
achievement based on preschool attendance. Twenty-four randomly selected
4th grade children are used in the study. Half attend a preschool
program and half do not. Each child's achievement score is given below.
Make sure to use the appropriate t-test for this
analysis.Preschool:8,6,8,9,7,9,6,9,8,9,7,8No Preschool:
6,5,7,6,8,5,7,5,6,7,5,6a. What is the null and alternative hypothesis
(in symbols) for this t-test?b. Use the appropriate t-test statistic? Is
the t-test significant?c.State you conclusion
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