Author: Anonymous

F1 Consider the following test statistics: Test Statistic A  

Consider a population that is NOT normally distributed with mean

This question is about the effect of the sample size on the sampling distribution of the sample mean 

Consider a population with mean

B3 The significance level is given by the probability of which cell:

The following information applies to questions E1-E5: There is the idea that the average miles run per day in the population of marathon runners is 25 miles. You believe that this population mean is different from 25 miles. In testing the hypotheses, you take a random sample of 36 marathon runners which produced a sample mean of 22.8 miles per day. The population is normally distributed with standard deviation

A3 Find the standard error of the sample mean.

A4 What is the probability that the sample mean exceeds 93.0 units?

F3 What is the critical value associated with this test? Note: Provide the positive critical value.

III. Numerical and Group Questions