Question

Most married couples have two or three personality preferences in common. A random sample of 384...

Most married couples have two or three personality preferences in common. A random sample of 384 married couples found that 136 had three preferences in common. Another random sample of 588 couples showed that 214 had two personality preferences in common. Let p1 be the population proportion of all married couples who have three personality preferences in common. Let p2 be the population proportion of all married couples who have two personality preferences in common.

(a) Find a 95% confidence interval for p1p2. (Use 3 decimal places.)

lower limit
upper limit

Homework Answers

Answer #1

Refer Standard normal table/Z-table or use excel function "=NORM.S.INV((1-0.025))" to find the critical value of z.

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