The Target Grade Distribution for a Particular Course Is 10

The target grade distribution for a particular course is 10% A, 30% B, 40% C, 15% D, 5% F.Students complain that a particular professor who teaches this course is much harder than others.They survey 152 former students of this professor's class and find they received the following grades: 10 A, 44 B, 64 C, 23 D, 11 F.Conduct a χ2 goodness-of-fit test to see if the data provide sufficient evidence to support the students' complaint.Select the appropriate critical value (CV) , test statistic (TS) , and decision.(Use α = 0.10.)

A) CV = 13.2767, TS = 519.80, reject H₀
B) CV = 9.2364, TS = 3.5263, fail to reject H₀
C) CV = 7.7794, TS = 519.80, reject H₀
D) CV = 7.7794, TS = 3.5263, fail to reject H₀

Correct Answer:

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