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BBUNDERSTAT127.4.017.5.
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PRACTICE ANOTHER
A random sample of 388 married couples found that 288 had two or more personality preferences in common. In another random sample of 580 married couples, it was found
that only 26 had no preferences in common. Let P, be the population proportion of all married couples who have two or more personality preferences in common. Let Pz be the
population proportion of all married couples who have no personality preferences in common
USE SALT
(a) Find a 90% confidence interval for p - P2. (Use 3 decimal places.)
lower limit
upper limt