Use 4 decimal places for the final answer.

I. PROBLEM SOLVING

1. Find the margin of error. A simple random sample is conducted of 1486 college

students who are seeking bachelor's degrees, and it includes 802 who earned

bachelor's degrees within five years. Use a 0.01 significance level to test the

claim that most college students earn bachelor's degrees within five years.

2. The Genetics and IVF Institute conducted a clinical trial of the YSORT method

designed to increase the probability of conceiving a boy. As of this writing, 152

babies were born to parents using the YSORT method, and 127 of them were

boys. Use the sample data to construct a 99% confidence interval estimate of

the percentage of boys born to parents using the YSORT method.