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At the beginning of the semester, a professor tells students that if they study for the tests, then there is a 55% chance they will get a B or higher on the tests. If they do not study, there is a 20% chance that they will get a B or higher on the tests. The professor knows from prior surveys that 60% of students study for the tests. What is the probability that a randomly selected student studies for a test and gets a B or higher?

A) 0.08
B) 0.11
C) 0.33
D) 0.55

User Lovespeed
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2 Answers

2 votes

Answer:

0.33

Explanation:

Edge 2020

User G Warner
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5.6k points
4 votes

Answer:

D

Explanation:

User Emsr
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