Mathematics, 19.12.2019 05:31 treestump090
Apsychologist obtains a random sample of 22 mothers in the first trimester of their pregnancy. the mothers are asked to play classical music in the house at least 30 min each day until they give birth. after 5 years, the child is administered an iq test. it is known that iqs are normally distributed with a mean of 100. if the iqs of the 22 children in the study result in a sample mean of 105.7 ans sample standard deviation of 13, is there evidence that the children have higher iqs? use the alphaαequals=0.050.05 level of significance. complete parts (a) through (d).
(a) determine the null and alternative hypotheses.
(b.)identify the test statistic.
i. approximate the p-value.
ii. the p-value is in the range
(c) state the conclusion for the test.
(d) state the conclusion in context of the problem.
Answers: 1
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Apsychologist obtains a random sample of 22 mothers in the first trimester of their pregnancy. the m...
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