Part I. ComputationShow your work for computations.No Work = No Credit!

1. A researcher is interested in testing whether men with beards have a different number of children than the unshaven general population.The general population has on average = 1.3 children.A sample of 25 bearded men was found to have an average number of children of=1.8, with a standard deviation of 1.2.Test whether bearded men have a different number of children.Set alpha to = .05

STEP 1: State your hypothesesin words(include and label both H0and H1).(2 points)

State your hypothesesin symbols(include and label both H0and H1). (2 points)

STEP 2:Set up the criteria for making a decision.That is, find the critical value.

(2 points)

STEP 3:Summarize the data into the appropriate test-statistic.That is, compute the t statistic.(3 points)

STEP 4:Evaluate the Null Hypothesis (Reject or Fail to reject?)(1 point)

STEP 5:What is your conclusion?(1 point)