Question 1
The following data represent the scores of 50 students on a statistics exam. Suppose that one of the 50 students is chosen at random and that student's score is noted.
| a. | What is the probability that the student’s score is 88? |
b.
What is the probability that the student’s score is less than 60?
c.
What is the probability that the student’s score is between 70 and 79, inclusive?
Question 2
Three companies (A, B, and C) are to be ranked first, second, and third in a list of companies with the highest customer satisfaction.
a.
List all the possible sets of rankings for these top three companies.
b.
Assuming that all sets of rankings are equally likely, what is the probability that Company A will be ranked first, Company B second, and Company C third?
c.
Assuming that all sets of rankings are equally likely, what is the probability that Company B will be ranked first?
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