Wednesday

October 22, 2014

October 22, 2014

Posted by **Marshall** on Thursday, November 6, 2008 at 3:10pm.

A) What is the shape, mean, and standard deviation of the sampling distribution

of the sample mean for samples of size 50?

B) What is the probability that the sample mean is 21 or higher?

C) What is the probability that the sample mean falls within 2 points of the

population mean?

D) What is the probability that the sample mean is 17 or less?

Last year, a national opinion poll found that 44% of all American adults agree that parents should be given vouchers good for education at any public or private school of their choice. Assume that in fact the population proportion is 0.44. A sample of 300 is to be selected and asked the same question:

A) What is the shape, mean, and standard deviation of the sampling distribution

of the sample proportion for samples of size 300?

B) What is the probability that the sample proportion will fall within 3% of the

population proportion?

C) What is the probability that the sample proportion will exceed 50%?

D) If the sample size were increased to 900, what is the probability that the

sample proportion will fall within 3% of the population proportion

- statistics -
**Cori**, Wednesday, November 12, 2008 at 5:10pm13.2555

- statistics -
**cj**, Saturday, April 4, 2009 at 5:56pm7.62

- statistics -
**dsf**, Saturday, November 7, 2009 at 9:09amdfds

**Answer this Question**

**Related Questions**

AP Statistics - Sampling Distribution Help - The composite scores of students on...

AP Statistics - sampling distribution help - The composite scores of students on...

AP - The composite scores of students on the ACT college entrance examination in...

Statistics - 1. The scores of students on the ACT college entrance examination ...

statistics - Scores on a certain nationwide college entrance examination follow ...

statistics - Scores on the ACT college entrance exam are Normally distributed ...

math - Statistics: Analyze student exam scores Students were given an exam with ...

statistics - The Survey of Study Habits and Attitudes (SSHA) is a psychological ...

statistics - Suppose scores on the mathematics section of the SAT follow a ...

statistics - Suppose scores on the mathematics section of the SAT follow a ...