ster, the following grades were recorded. Calculate the chi-square test statistic x used to determine if the grade distribution for the department is different than expected. Use a = 0.01. А в СD F Number 42 36 60 8 14 Grade О 341 O 6.87 O 5.25 O 4.82

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Solve the problem.
A teacher finds that final grades in the statistics department are distributed as: A, 25%; B, 25%; C, 40%; D, 5%; F, 5%. At the end of a
randomly selected semester, the following grades were recorded. Calculate the chi-square test statistic x used to determine if the grade
distribution for the department is different than expected. Use a = 0.01.
ABCD F
Number 42 36 60 8 14
Grade
О 3.41
O 6.87
O 5.25
O 4.82
Transcribed Image Text:Solve the problem. A teacher finds that final grades in the statistics department are distributed as: A, 25%; B, 25%; C, 40%; D, 5%; F, 5%. At the end of a randomly selected semester, the following grades were recorded. Calculate the chi-square test statistic x used to determine if the grade distribution for the department is different than expected. Use a = 0.01. ABCD F Number 42 36 60 8 14 Grade О 3.41 O 6.87 O 5.25 O 4.82
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