a. Let p be the proportion of households in Abbotsford having an exotic pet. Suppose you want to construct a 90% confidence interval for p with a margin of error of 0.05, how large should the sample...

a. Let p be the proportion of households in Abbotsford having an exotic pet. Suppose
you want to construct a 90% confidence interval for p with a margin of error of 0.05, how
large should the sample size be? (Assume that you do not have any knowledge or prior
sample about the population proportion p.)
(b) Suppose that in a random sample of 350 households in Abbotsford, it is found that
41 of them have an exotic pet. Construct an adjusted 95% confidence interval for the
proportion of households in Abbotsford having an exotic pet. What is the margin of error
in this case?