A statistics professor has noted from past experience that a student who follows

Question

A statistics professor has noted from past experience that a student who follows a program of studying two hours for each hour in class has a probability of 0.9 of geting a grade of C or better, while a student who does not follow a regular study program hasa probability of0.2 of getting a Cor better. It is known that 70% of the students follow the study program. Find the probability that a student who has earned a C or better grade, followed the program 11. 12. The following table shows the number of students in three different degree programs and whether they are graduate or undergraduate students: Undergraduate Graduate Total 200 175 125 500 150 150 100 400 50 25 25 100 Arts & Sciences Total a, b. e. what is the probability that a randomly selected student is an undergraduate? What percentage of students is engineering majors? If we know that a selected student is an undergraduate, what is the probability that he or she is a business major? d. A student is enrolled in the Arts and Sciences school. What is the probability that the student e. What is the probability that a randomly selected student is a graduate Business major? is an undergraduate student?

Explanation / Answer

Result:

Question 12 answered:

a). P=400/500=0.8

b).   P=175/500=0.35

c). P=150/400 = 0.375

d). P=100/125 = 0.8

e). P=50/500 =0.10

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