 # General Statistics Questions

Subject Mathematics General Statistics

## Question

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

## Solution Preview

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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...

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