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Salmon: Assume that the weights of spawning Chinook Salmon in the Columbia River are normally distributed....

Salmon: Assume that the weights of spawning Chinook Salmon in the Columbia River are normally distributed. You randomly catch and weigh 20 such salmon. The mean weight from your sample is 25.2 pounds with a standard deviation of 4.5 pounds.

(a) Test the claim that the mean weight of Columbia River salmon is greater than 23 pounds. Use a 0.10 significance level.

(b) Test the same claim at the 0.05 significance level.

(c) Test the same claim at the 0.01 significance level.

Math   Statistics-And-Probability   
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