a. girls do better on theSAT Math b. boys do better on the SATMath c. there is n

Question

a.       girls do better on theSAT Math

b.      boys do better on the SATMath

c.       there is no difference inthe scores

d.      cannot make a conclusionbecause the mean scores are not given

e.       cannot make a conclusionbecause the samples are different sizes

2.)At Justice HS a random sample of 20 boys and 25 girls istaken to determine if the SAT Math scores differ for the twogroups. The 95% confidence interval for the differences in themean scores between boys and girls is (-20.57, -15.3). Whatcan you conclude about the scores for boys and girls at JusticeHS?

a.       girls do better on theSAT Math

b.      boys do better on the SATMath

c.       there is no difference inthe scores

d.      cannot make a conclusionbecause the mean scores are not given

e.       cannot make a conclusionbecause the samples are different sizes

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Explanation / Answer

1) correct option is (d) as it is not clear whether its the difference of means of boysfrom girls or girls from boys. 2) correct option is (a) differnce of mean score between boys and girls is given whichis negative which means the score of girls is greater than that ofboys

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