Wednesday
April 1, 2015

Homework Help: statistics

Posted by PK on Tuesday, February 21, 2012 at 4:28pm.

The population standard deviation (σ) for a standardized achievement test that is normally distributed is 8.
a.) Calculate the standard error of the mean if you draw a random sample of50 test scores. Show your work for full credit . . .
b.) Your sample mean is calculated to be 77. Compute the 95% confidence interval for the mean. Show your work!
c.) Interpret the meaning of the 95% confidence intervalin one sentence.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

statistics - Suppose that the population standard deviation () for a normally ...
statistics - Scores on a national writing exam are approximately normally ...
statistics - An IQ test was administered to a random sample of 26 mental ...
statistics - The scores for standardized test are normally distributed with a ...
statistics - Given a sample size of 38, with sample mean 660.3 and sample ...
statistics - the admissions policy at a certain university requires that ...
statistics - the admissions policy at a certain university requires that ...
Math - The scores of students on standardized test are normally distributed with...
statistics - the dean of admissions in a large university has determined that ...
Business Statistics - In a goodness-of-fit test, the null hypothesis states that...

Members