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sychologist obtains a random sample of 20 mothers in the first trimester of their pr...

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sychologist obtains a random sample of 20 mothers in the first trimester of their pr mothers are asked to play Mozart in the house at least 30 minutes each day until After 5 years the child is administered an IQ test It is known that IQs are norma buted with a mean of 100 If the IQs of the 20 children in the study result in a sam and sample standard deviation of 15 7 is there evidence that the children have the a 0 05 level of significance ulate the test statistic statistic nd to two decimal places as needed ulate the P value ue nd to three decimal places as needed www

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