Probability: Other Probability Problems – #29550

Question: As part of its ongoing evaluation, HiEd University conducted a survey of current students regarding their satisfaction with their university experiences. Below is part of the resulting data.

Poor Average Excellent Total
Less than 60 hours credit 20 70 130
60 hours or more 30 20
Total 40 200

Complete the table.

What is the probability that a student in the survey:

a) gave an excellent rating?

b) did not give a poor rating?

c) gave a poor rating or had 60 hours of credit or more?

d) gave an excellent rating if they had less than 60 hours of credit?


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