Saturday
April 19, 2014

Homework Help: statistics

Posted by Asia on Wednesday, February 13, 2013 at 1:09pm.

1.A magazine reported that 6% of Americans read the news paper while driving. 100 drivers are selected at random, find the probability that exactly 25 of them say they read the newspaper while driving.(normal binomial formula to solve)

2. A survey of 30 adults found that the mean age of a person's primary vehicle is 5.6 years. Assuming that the standard deviation of the population is 0.8 years find best point estimate of the population is 0.8 years find the best point estimate of the population mean and the 99% confidence interval of that population mean.

3.ten randomly selected people were asked how long they slept at night. The mean time was 7.1 hours and the (sample) standard deviation was 0.78 hours. Find the 95% confidence interval of the mean time. Assume the variable is normally distributed.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

rfvv - 1. You can read whatever magazine you like. 2. You are able to read ...
rfvv - 1. You can read whatever magazine you like. 2. You can read which ...
English - Posted by English on Sunday, February 27, 2011 at 7:26pm. 1. You can ...
Statistics - A Gallup Poll reported the percentage of Americans who approve of ...
english - First you get to read something on the Internet or in your favorite ...
Finance - In November and December 2011, Gee Company, a newly organized magazine...
english - First you get to read something on the Internet or in your favorite ...
English - You are right but I just want to know if the following sentences are ...
ethnics - What are the linguistic, political, social, econmic, religious, and ...
statistics - 1. 35% of North Americans do not think that college education is a ...

Search
Members