Friday
May 22, 2015

Homework Help: statistics

Posted by Sunshine on Thursday, March 21, 2013 at 12:44am.

Scores on a visual perception test are normally distributed with a mean of 2020 and a standard deviation of 250.

a)If one subject is randomly selected and tested, find the probability of a score greater than 1800
b)if 50 subjects are randomly selected and tested fid the probability that the sample mean is between 2000 and 2100

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Members