question archive A recent study claimed the aver cholesterol level for 8th grade students to be 150 with s= 30
Subject:MathPrice:3.86 Bought8
A recent study claimed the aver cholesterol level for 8th grade students to be 150 with s= 30. The school nurse feels that the number is too low. Choosing sample of 81 students, she finds that their average cholesterol is 157. Using a= 5% would this be enough evidence to indicate that the nurse is correct
Purchased 8 times