The following table shows the number of students who earned an A, B, C, and D grade

Question:

The following table shows the number of students who earned an A, B, C, and D grade in a business statistics class along with their year in their program.

Grade Sophomore Junior A 14 30 B 31 38 C 20 16 D 11 5

a. What percentage of students in this class are juniors?

b. What percentage of students in this class earned a B grade?

c. What percentage of students in this class were sophomores and earned a B grade?

d. What percentage of students in this class were juniors or earned an A grade?

e. What percentage of students in this class earned a C grade, given they were sophomores?

f. What percentage of students in this class were sophomores, given they earned a C grade?
g. Do course grade and year in the program appear to be independent or dependent? Define Event A as earning an A grade and Event B as a student in his or her sophomore year.AppendixLO1

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