A psychology graduate student wants to test the claim that there is a significant difference between the IQs of spouses. To test this claim, she measures the IQs of 9 married couples using a standard IQ test. The results of the IQ tests are listed in the following table. Using a 0.10 level of significance, test the claim that there is a significant difference between the IQs assuming that the population distribution of the paired differences is approximately normal. Let the spouse 1 group be Population 1 and let the spouse 2 group be Population 2. IQs of Married Couples Spouse 1 105 115 112 125 105 123 124 98 129 Spouse 2 103 113 108 123 105 125 121 95 130 Step 2 of 3 : Compute the value of the test statistic. Round your answer to three decimal places. Is it positive or negative? 3 of 3: Draw a conclusion and interpret the decision. Fail to reject or reject? Is there enough evidence?
A psychology graduate student wants to test the claim that there is a significant difference between the IQs of spouses. To test this claim, she measures the IQs of 9 married couples using a standard IQ test. The results of the IQ tests are listed in the following table. Using a 0.10 level of significance, test the claim that there is a significant difference between the IQs assuming that the population distribution of the paired differences is approximately normal. Let the spouse 1 group be Population 1 and let the spouse 2 group be Population 2. IQs of Married Couples Spouse 1 105 115 112 125 105 123 124 98 129 Spouse 2 103 113 108 123 105 125 121 95 130 Step 2 of 3 : Compute the value of the test statistic. Round your answer to three decimal places. Is it positive or negative? 3 of 3: Draw a conclusion and interpret the decision. Fail to reject or reject? Is there enough evidence?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A psychology graduate student wants to test the claim that there is a significant difference between the IQs of spouses. To test this claim, she measures the IQs of 9 married couples using a standard IQ test. The results of the IQ tests are listed in the following table. Using a 0.10 level of significance, test the claim that there is a significant difference between the IQs assuming that the population distribution of the paired differences is approximately normal. Let the spouse 1 group be Population 1 and let the spouse 2 group be Population 2.
IQs of Married Couples
| Spouse 1 | 105 | 115 | 112 | 125 | 105 | 123 | 124 | 98 | 129 |
|---|---|---|---|---|---|---|---|---|---|
| Spouse 2 | 103 | 113 | 108 | 123 | 105 | 125 | 121 | 95 | 130 |
Step 2 of 3 :
Compute the value of the test statistic. Round your answer to three decimal places. Is it positive or negative?
3 of 3: Draw a conclusion and interpret the decision. Fail to reject or reject? Is there enough evidence?
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