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A statistics teacher claims that, on average, 20% of students in his class get an A, 25% get a B, 35% get a C, 10% get a D and the rest get an F. The grades of a random sample of his students over the years is recorded. Test the claim at 1% significance.Round to the fourth as needed. Categories ObservedFrequency ExpectedFrequency A 44   B 39   C 96   D 9   F 31

A statistics teacher claims that, on average, 20% of students in his class get an A, 25% get a B, 35% get a C, 10% get a D and the rest get an F. The grades of a random sample of his students over the years is recorded. Test the claim at 1% significance.Round to the fourth as needed. Categories ObservedFrequency ExpectedFrequency A 44   B 39   C 96   D 9   F 31

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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A statistics teacher claims that, on average, 20% of students in his class get an A, 25% get a B, 35% get a C, 10% get a D and the rest get an F. The grades of a random sample of his students over the years is recorded. Test the claim at 1% significance.
Round to the fourth as needed.

Categories Observed
Frequency		 Expected
Frequency
A 44  
B 39  
C 96  
D 9  
F 31  
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