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 1 110 109 107 115 113 116 98 123 106 Spouse 2 108 105 104 114 109 115 97 128 92Copy Data    Step 1 of 3:  State the null and alternative hypotheses for the test. Fill in the blank below. H0: Ha: μd=0: μd⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯0 Step 2 of 3:  Compute the value of the test statistic. Round your answer to three decimal places. Step 3 of 3:  Draw a conclusion and interpret the decision.

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