Group Statistics Mean Std. Deviation Std. Error Mean 138.517 95.118 year round s
ID: 3268635 • Letter: G
Question
Group Statistics Mean Std. Deviation Std. Error Mean 138.517 95.118 year round school 7.893 academic performance 1999 No 308 648.12 92483.30 Yes 9.917 Independent Samples Test Levene's Test for Equality of -test for Equality of Means Variances Sig. academic performance 1999 Equal variances assumed 31.389 10.681 Equal variances not assumed 13.004 Independent Samples Test t-test for Equality of Means df Sig. (2-tailed) Mean Difference academic performance 1999 Equal varilances assumerd 398 164.816 Equal variances not assumed2 16 94 164.816 Independent Samples Test t-test for Equality of Means Std. Error Difference 95% Confidence Interval of the Difference Lower Upper academic performance 1999 Equal variances assumed Equal variances not assumed 15.431 12.674 134. 479 139.835 195. 153 189.796Explanation / Answer
Under this test, the null and alternate hypothesis are:
H0: There isn't any statistically significant difference in academic performances in 1999 between year-round and non year round schools
Ha: There is a statistically significant difference in academic performances in 1999 between year-round and non year round schools
From the 3rd table, we see that significant value is 0.000 in both the cases. Now since the significant value 0.000 is less than 0.05, so at 5% level of significance we have sufficient evidence to reject the null hypothesis H0.
Hence we reject the null hypothesis and say that there a statistically significant difference in academic performances in 1999 between year-round and non year round schools.
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