The Normal Distribution

Post on 08-Jan-2016

17 views 0 download

description

The Normal Distribution. The average (mean) IQ in America is 100 with a standard deviation of 15. Assume that IQs are normally distributed. a. Find the percentage of people with IQ lower than 69. - PowerPoint PPT Presentation

Transcript of The Normal Distribution

The Normal Distribution

The average (mean) IQ in America is 100 with a standard deviation of 15. Assume that IQs are normally distributed.a. Find the percentage of people with IQ lower than

69.

The average (mean) IQ in America is 100 with a standard deviation of 15. Assume that IQs are normally distributed.b. Find the probability that a person would have an IQ

higher than 106.

The average (mean) IQ in America is 100 with a standard deviation of 15. Assume that IQs are normally distributed.c. Find the percent of people who have an IQ between

69 and 106.