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Math 80 - Quiz #7 (Chapter 14)
Please show work, when possible.
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If the probability that a surgery is successful is - ,what is the probability that it is not successful?
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1.
(5 pts.)
2.
(5 pts. E~CII)
In a large Introductory Statistics lecture hall, the professor reports that @of the students
enrolIed have never taken a Calculus course, 0% have taken only one semester of Calculus, and the rest
have taken two or more semesters of Calculus. The professor randomly assigns students to groups of 3
to work on a project for the course. What is the probability that the fxst groupmate you meet has
studied:
a. Two or more semesters of Calculus?
0
b. What is the probability that, of your other two groupmates, neither has studied Calculus?
c. What is the probability that, of your other two groupmates, at least one has had more than one
semester of Calculus?
(continued on back)
3.
(5 pa.) Write
out the sample space for the following:
We pick a number from 1 to 5 , flip a coin, then draw a card from a stack of 2 color cards (Red and
Yellow). Please make your answer very clear - maybe circle all of the things that will end up being in
the sample space or rewrite all of the things in the sample space clearly.