Question

In 2008 ACT,Inc reported that 74% of 1500 randomly selected college freshman rerurned to college the next year. Estimate the national freshman to sophomore retention rate.
a) Verify below the two condition are met for constructing a confidence interval for the population proportion.
b) What is the value of t a/2or z a/2 for 99% confidence interval
c) What is value of the margin of errorfor your interval?

Related Questions

At a small college it is known from previous years that 35% of all college freshman start in college... In a survey of 300 college graduates, 58% reported that they entered a profession closely related to... 1. Find the indicated probability. In a survey of 300 college graduates, 63% reported that they ent... Freshman Success-College Exploration- College Comparison Portfolio Worksheet College Information...