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16) A kindergarten teach claims the average weight of a healthy student should be 45 pounds....

16) A kindergarten teach claims the average weight of a healthy student should be 45 pounds. A sample of 52 kindergarteners has an average of 47 pounds. The population standard deviation is 3 pounds. At α = 0.05, does the data determine whether the average weight of a kindergartener is more than 42 pounds?

a) State the Hypotheses

b) Calculate the Test Statistics

Math   Statistics-And-Probability   
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Answer #1

This hypothesis test is a right tailed test .

The null and alternative hypothesis is

H0 : = 42

Ha : > 42

Test statistic = z

= ( - ) /    / n

= (47 - 42) / 3 / 52

Test statistic = 12.02

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