4. I have reviewed the midterm grades, and I am trying to predict how well the...

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4. I have reviewed the midterm grades, and I amtrying to predict how well the class will do on the final exam. Thefrequency values are actual grades for the Summer II midterm:
Grade Expected Frequency (Observed)
Greater than A 5 7
A 6 9
B 8 4
C 3 4
D 1 0
F 2 1
a. What will be my degrees of freedom?
b. What is O-E (difference) for grades of B?
c. What is O-E^2 for grades of A?
d. What is (O-E)^2/E for grades of F?
e. What is O-E (difference) for grades of B?
f. What is the chi square (?2) test statistic?
g. What is the p-value?
h. At the 5% significance level, what is yourdecision?
i. What is the reason for the decision?
j. What is the conclusion in full sentences?

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SolutionWe have to test if distribution of midterm grades is fitted withexpected grades of final examinationThus hypothesis of the study areH0The distribution of midterm grades is fitted withexpected grades of final examinationVsHaThe distribution of midterm grades does notfitted with expected grades of final examinationWe are given following table of expected See Answer

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4. I have reviewed the midterm grades, and I amtrying to predict how well the class will do on the final exam. Thefrequency values are actual grades for the Summer II midterm:

Grade	Expected	Frequency (Observed)
Greater than A	5	7
A	6	9
B	8	4
C	3	4
D	1	0
F	2	1

a. What will be my degrees of freedom?

b. What is O-E (difference) for grades of B?

c. What is O-E^2 for grades of A?

d. What is (O-E)^2/E for grades of F?

e. What is O-E (difference) for grades of B?

f. What is the chi square (?2) test statistic?

g. What is the p-value?

h. At the 5% significance level, what is yourdecision?

i. What is the reason for the decision?

j. What is the conclusion in full sentences?