1. A cheese processing company wants to estimate the mean cholesterol content of all one ounce servings of cheese. The estimate must be within .5 milligrams of the population mean.

A) determine the minimum required sample side to construct a 95% confidence interval, for the population mean. Assume the population standard deviation is 2.8 milligrams.

B) repeat part A using a 99% confidence interval

C) which level of confidence requires a larger sample size? Explain

2. Find z0 when P(Z0<Z0)=.7643?

A) -0.63 B) 0.63 C) 0.72 D) -0.72
C) If you want to increase your confidence, you need to increase the number
of samples, because Z in creases and so n has to correspondingly increase...

This is only a preview of the solution. Please use the purchase button to see the entire solution


or free if you
register a new account!

Assisting Tutor

Related Homework Solutions

Get help from a qualified tutor
Live Chats