Posted by **helga** on Sunday, February 1, 2009 at 9:37pm.

what are the mean and standard deviation of a sampling distribution consisting of samples of size 16? these sameples were drawn from a population whose mean is 25 and who standard deviation is 5.

a. 25 and 1.25

b. 5 and 5

c. 25 and 5

d. 5 and 1.25

e. 25 and square root of 5

the standard deviations of SAT scores is 100 points. a researcher decides to take a sample of 500 students' scores to estimate the mean score of students in your state. what is the standard deviation of the sample mean?

a. 0.2

b. 4.47

c. 5

d. 100

e. can't determine without sample mean

what is the critical z-value for an 85% confidence interval?

a. .8023

b. 1.44

c. 1.04

d. need population standard deviation

e. need sample size

which of the follow isn't necessary to compute the sample size appropriate for a given confidence level and margin of error?

a. sample mean

b. populatuion standard deviation or an estimate of standard deviation

c. critcal z-value, z*

d. the margin of error m.

e. all of these values are neccessary

## Answer This Question

## Related Questions

- Math (Statistic) - Considered the sampling distribution of a sample mean ...
- Statistics - The following is a histogram (right skewed) of the first ten terms ...
- statistics - An SRS of size n is taken from a large population whose ...
- Statisitcs - The mean height of fully grown birch trees are 18 feet with a ...
- Statistics - A normally distributed population has a mean of 40 and a standard ...
- Stat - An SRS of size n is taken from a large population whose distribution of ...
- statistics - The scores of students on the ACT college entrance examination in ...
- statistics - Suppose a population distribution of SAT scores has population mean...
- Statistics - 1. The scores of students on the ACT college entrance examination ...
- statistics - How do we compute sample size fluctuations? Suppose we have a ...

More Related Questions