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A Researcher Performs a Hypothesis Test to Test the Claim H0\mathrm { H } _ { 0 }

Question 102

Multiple Choice

A researcher performs a hypothesis test to test the claim that among girls aged 9-10,the mean score on a particular aptitude test differs from 72,which is the mean score for boys of the same age.Use the computer output below to draw a conclusion about the girls' scores,using a significance level of 0.05. Test of H0\mathrm { H } _ { 0 } : ? = 72 vs HA\mathrm { H } _ { \mathrm { A } } : ? ? 72
N Mean StDev t P-value
19 75.88 12.7 1.33 0.20


A) Reject the null - there is sufficient evidence to say that girls' aptitude scores are different from 72.
B) Reject the null - there is not sufficient evidence to say that girls' aptitude scores are different from 72.
C) Fail to reject the null - there is evidence to say that girls' aptitude scores are different from 72.
D) Fail to reject the null - there is not sufficient evidence to say that girls' aptitude scores are different from 72.
E) There is insufficient information to draw a conclusion.

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