Thursday
August 28, 2014

Homework Help: Stats Anyone?

Posted by CM on Wednesday, October 28, 2009 at 2:40am.

The first-year retention rate is the percentage of entering freshman at a given college who return to that same college for their sophomore year. Many colleges use the first-year retention rate as one measure of their quality. Suppose that the first-year retention rate at a given college is 75% (a typical number).

a. One dormitory suite holds six first-year students. What is the probability that at least four of those students return for their sophomore year?

b. Suppose that this college admits 500 new first-year students every year, and has had a retention rate of 75% for a long time. What is the mean number of students who return for their sophomore year? What is the standard deviation for this number?

c. What is the probability that, in a given year, no more than 350 first-year students return for their sophomore year?

d. Suppose that in a given year, 410 students return for their sophomore year. Is this unusually high? Explain your answer.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

STATS HELP - Freshman-sophomore retention rate (FSRR) for a college is the ...
math 127 - In 2008 ACT,Inc reported that 74% of 1500 randomly selected college ...
English - 1. He got into college last year. 2. He went into college last year. 3...
math - College is expected to cost $150,000 per year in 18 years, how much ...
Career Planning - Tom wants to find out more information about colleges he might...
Stats - Suppose that you are given the following information about the freshman ...
College Algebra - Tina invested $30,000 in a stock. In the first year, the stock...
Deciding on a H.S. Science Course - I'm currently a sophomore, and I need to ...
stats help! - thank you in advance! in a given year the college admissions ...
college stats - in a sample of 159,949 first year college students, the national...

Search
Members