A biology professor claims that, on the average, 15% of her students get a grade of A, 25% get a B, 35% get a C, 10% get a D, and 15% get an F. The grades of a random sample of 109 students were recorded. The following table presents the results. Grade 1 2 4 5 Observed 4 31 42 13 19 What is the value of ? A) 12.317 B) 9.488 C) 11.143 D) 11.067 3.

College Algebra
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ISBN:9781337282291
Author:Ron Larson
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Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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A biology professor claims that, on the average, 15% of her students get a grade of A,
25% get a B, 35% get a C, 10% get a D, and 15% get an F. The grades of a random
sample of 109 students were recorded. The following table presents the results.
Grade
1
2
4
5
Observed
4
31
42
13
19
What is the value of ?
A) 12.317
B) 9.488
C) 11.143
D) 11.067
3.
Transcribed Image Text:A biology professor claims that, on the average, 15% of her students get a grade of A, 25% get a B, 35% get a C, 10% get a D, and 15% get an F. The grades of a random sample of 109 students were recorded. The following table presents the results. Grade 1 2 4 5 Observed 4 31 42 13 19 What is the value of ? A) 12.317 B) 9.488 C) 11.143 D) 11.067 3.
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