You are here (click or tap to change)    Back to Chapter 8 Main Page

Problem 5

 

Historically, the average height for males was believed to be 68 inches.  A doctor believes the average height has increased over the last 100 years.  He claims the average male is now 70 inches tall.  A random sample of 50 men had an average height of 68.9 inches and a standard deviation of 2.8 inches.  Use a 10% significance level and the p-value method to test the doctor’s claim. 

 

  Back to Chapter 8