A random sample of 37 second graders who participated in
Chapter 10, Problem 43E(choose chapter or problem)
Problem 43E
A random sample of 37 second graders who participated in sports had manual dexterity scores with mean 32.19 and standard deviation 4.34. An independent sample of 37 second graders who did not participate in sports had manual dexterity scores with mean 31.68 and standard deviation 4.56.
a Test to see whether sufficient evidence exists to indicate that second graders who participate in sports have a higher mean dexterity score. Use α = .05.
b For the rejection region used in part (a), calculate β when μ1 − μ2 = 3.
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