A simple random sample of 225 children was taken as part of a poll. Among these 225 children, 47.5% stated that chocolate chip is their favorite kind of cookie.[14 points]

1. How many of the 225 children sampled said chocolate chip is their favorite kind of cookie?
2. Construct a 90% confidence interval for the proportion of all children whose favorite cookie is chocolate chip.

c. write a sentence reporting the confidence interval.

1. What is the margin of error for the 90% confidence interval?
2. State two ways that the margin of error could be decreased.