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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 used to determine if the grade distribution for the department is different than expected. Use a = 0.01. Grade | A B Cc DF Number 42 36 60 8 14 B) 6.87 A) 4.82 C) 3.41 D) 5.25

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 used to determine if the grade distribution for the department is different than expected. Use a = 0.01. Grade | A B Cc DF Number 42 36 60 8 14 B) 6.87 A) 4.82 C) 3.41 D) 5.25

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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1) 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. Grade | A B C D F Number 42 36 60 8 14 B) 6.87 A) 4.82 C) 3.41 D) 5.25
Transcribed Image Text:1) 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. Grade | A B C D F Number 42 36 60 8 14 B) 6.87 A) 4.82 C) 3.41 D) 5.25
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