Professor alpha and beta both teach statistics the

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Professor Alpha and Beta both teach statistics. The following table shows the distribution of their final grades. We wonder whether one of these professors is an "easier'" grader

a) create a table of each professor's expected counts, and explain why a chi-squared procedure is appropriate

b) write an appropriate null hypothesis

c) test your hypothesis about the 2 professors, and state your conclusion


Prof. Alpha

Prof. Beta

A 3 9
B 11 12
C 14 8
Below C 12 3

Reference no: EM13637577

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