A test the null hypothesis that the grades from this class


A standardized test for a specific college course is constructed so that the distribution of grades should have μ = 100 and σ = 10. A class of 30 students has a mean grade of 92.

(a) Test the null hypothesis that the grades from this class are a random sample from the stated distribution. (Use α = 0.05.)

(b) What is the p value associated with this test?

(c) Discuss the practical uses of the results of this statistical test.

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Basic Statistics: A test the null hypothesis that the grades from this class
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