Speaking Couples Listed below are the numbers of words spoken in a day by each member of six different couples. The data are randomly selected from the first two columns in Data Set 17 from Appendix B. Use a 0.05 significance level to test the claim that among couples, males speak more words in a day than females.

Assume that the paired sample data are simple random samples and that the differences have a distribution that is approximately normal.

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Male 5638 21,319 17572 26,429 46.978 25,835 Female 5198 11,66 19,624 13,397 31,553 18,667