# Project #79714 - W3 Statistics Help- Problems

## Problem 1: Standard Error of Mean

 4.164 Suppose a random sample of n = 25 measurements is selected from a population with mean μ and standard deviation σ. For each of the following values of μ and σ, give the values of μxÌ„ and σxÌ„. μ = 10, σ = 3 μ = 100, σ = 25 μ = 20, σ = 40 μ = 10, σ = 100

Calculate standard error of mean and make an inference about the accuracy of the mean by analyzing problem 4.164 listed above.

Problem 2: Associated Probability

Resources: Table IV in Appendix B of Statistics for Business and Economics. See attachment, pgs 9-10.

Demonstrate how to find the area under the normal curve.

Determine the associated probability with z-score = 1.96.

Open Table IV Under Curve areas and find .475.

Find the same information by working the problem backwards, starting with the alpha (significance level).

 Subject Business Due By (Pacific Time) 08/20/2015 06:00 pm
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