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use 30 as a default sample size. Suppose that the average grade for all people who take this course in statistics is 83 with a standard deviation of...

use 30 as a default sample size. Suppose that the average grade for all people who take this course in statistics is 83 with a standard deviation of 3.5. If your particular class has an average of 89, can you conclude that your class is better than average at the 90 percent confidence level? Label and describeeach step of the hypothesis testing procedure, and be sure to specify whether this is a one-tailed or two-tailed test

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