The 2014 General Social Survey asked male respondents how many female partners they have had sex with since their 18th birthday. For the 131 males in the sample between the ages of 23 and 29, the median = 6 and mode = 1 (16.8% of the sample). Software summarizes other results:

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Variable n Mean StDev SE Mean 95.0% CI NUMWOMEN 131 10.53 15.36 1.34 (8.0, 13.1)

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(a) Show how software got the standard error reported, and interpret.

(b) Interpret the reported confidence interval.

(c) State a statistical factor that might make you skeptical about the usefulness of this confidence interval.