Use techniques developed in Chapter 12 and this chapter to construct 95% confidence limits

on the true mean difference between the Sexual Satisfaction scores in Exercise 13.1.

Exercise 13.1

Hout, Duncan, and Sobel (1987) reported on the relative sexual satisfaction of married couples.

They asked each member of 91 married couples to rate the degree to which they agreed

with “Sex is fun for me and my partner” on a four-point scale ranging from “never or occasionally”

to “almost always.” The data appear below (I know it’s a lot of data, but it’s an interesting

question, and the data can always be downloaded from the book’s website.):

Start out by running a matched-sample t test on these data. Why is a matched-sample test
appropriate?

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