34) A biology professor claims that, on the average, 15% of her students get a grade of A,25% get a B, 40% get a C, 10% get a D, and 10 % get an F. The grades of a randomsample of 131 students were recorded. The following table presents the results.34)Grade1 2 34513 21 73 11 13ObservedWhat is the value ofy2?) 14.902D) 9.488B) 11.143A) 16.873nd 4 columns. How many degrees of freedom are35)

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Asked Dec 2, 2019
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34) A biology professor claims that, on the average, 15% of her students get a grade of A,
25% get a B, 40% get a C, 10% get a D, and 10 % get an F. The grades of a random
sample of 131 students were recorded. The following table presents the results.
34)
Grade
1 2 34
5
13 21 73 11 13
Observed
What is the value ofy2?
) 14.902
D) 9.488
B) 11.143
A) 16.873
nd 4 columns. How many degrees of freedom are
35)
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34) A biology professor claims that, on the average, 15% of her students get a grade of A, 25% get a B, 40% get a C, 10% get a D, and 10 % get an F. The grades of a random sample of 131 students were recorded. The following table presents the results. 34) Grade 1 2 34 5 13 21 73 11 13 Observed What is the value ofy2? ) 14.902 D) 9.488 B) 11.143 A) 16.873 nd 4 columns. How many degrees of freedom are 35)

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Expert Answer

Step 1

The number of students sampled is 131. The provided data is,

Grade Observed
1
13
2
21
3
73
4
11
5
13
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Grade Observed 1 13 2 21 3 73 4 11 5 13

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Step 2

The expected frequ...

Grade Observed Percentage
Expected
13
1
15%
15%x131-19.65
2
21
25%
25%x131-32.75
40%
3
73
40%131-52.4
11
10%
10%131-13.1
10%x 131-13.1
5
13
10%
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Grade Observed Percentage Expected 13 1 15% 15%x131-19.65 2 21 25% 25%x131-32.75 40% 3 73 40%131-52.4 11 10% 10%131-13.1 10%x 131-13.1 5 13 10%

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