In a spelling contest, the mean mark of the 32 boys was 72 with the standard deviation of 8 while the mean mark of 36 girls was 75 with a standard deviation of 6. Test at α=0.05 that there is significant difference between the performance of boys and girls in the spelling contest. Type of test : Z-computed = Z-tabular =

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5. In a spelling contest, the mean mark of the 32 boys was 72 with the standard deviation of 8 while the mean mark of 36 girls was 75 with a standard deviation of 6. Test at α=0.05 that there is significant difference between the performance of boys and girls in the spelling contest.

Type of test :

Z-computed =

Z-tabular =

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