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A psychologist obtains a random sample of 20 mothers in the first trimester of their pregnancy. The mothers are asked to play Mozart in the house at least 30 minutes 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 20 children in the study result in a sample mean of 104.3 and sample standard deviation of 14.3, is there evidence that the children have higher IQs? Use the α = 0.10 level of significance. What type of hypothesis test is appropriate to conduct for this research? OA. Hypothesis test on a population standard deviation OB. Hypothesis test on a population mean OC. Hypothesis test on a population proportion Determine the null and alternative hypotheses. Ho: …….. H₁: (Type integers or decimals. Do not round.)

A psychologist obtains a random sample of 20 mothers in the first trimester of their pregnancy. The mothers are asked to play Mozart in the house at least 30 minutes 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 20 children in the study result in a sample mean of 104.3 and sample standard deviation of 14.3, is there evidence that the children have higher IQs? Use the α = 0.10 level of significance. What type of hypothesis test is appropriate to conduct for this research? OA. Hypothesis test on a population standard deviation OB. Hypothesis test on a population mean OC. Hypothesis test on a population proportion Determine the null and alternative hypotheses. Ho: …….. H₁: (Type integers or decimals. Do not round.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 2GP
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A psychologist obtains a random sample of 20 mothers in the first trimester of their pregnancy. The mothers are asked to play Mozart in the house at least 30 minutes 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 20 children in the study result in a sample mean of 104.3 and sample standard deviation of 14.3, is there evidence that the children have higher IQs? Use the α = 0.10 level of significance. What type of hypothesis test is appropriate to conduct for this research? OA. Hypothesis test on a population standard deviation OB. Hypothesis test on a population mean OC. Hypothesis test on a population proportion Determine the null and alternative hypotheses. Ho ... H₁: (Type integers or decimals. Do not round.)
Transcribed Image Text:A psychologist obtains a random sample of 20 mothers in the first trimester of their pregnancy. The mothers are asked to play Mozart in the house at least 30 minutes 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 20 children in the study result in a sample mean of 104.3 and sample standard deviation of 14.3, is there evidence that the children have higher IQs? Use the α = 0.10 level of significance. What type of hypothesis test is appropriate to conduct for this research? OA. Hypothesis test on a population standard deviation OB. Hypothesis test on a population mean OC. Hypothesis test on a population proportion Determine the null and alternative hypotheses. Ho ... H₁: (Type integers or decimals. Do not round.)
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