Name: 
 

Probability of Compound Events



 1 

Selena and Tracey play on a softball team.  Selena has 8 hits out of 20 times at bat, and Tracey has 6 hits out of 16 times at bat.  Based on their past performance, what is the probability that both girls will get a hit next time at bat?
a)
1
c)
mc001-3.jpg
b)
mc001-2.jpg
d)
mc001-4.jpg
 

 2 

The probability that the Cubs win their first game is mc002-1.jpg.  The probability that the Cubs win their second game is mc002-2.jpg.  What is the probability that the Cubs win both games?
a)
mc002-4.jpg
c)
mc002-6.jpg
b)
mc002-5.jpg
d)
mc002-7.jpg
 

 3 

The probability that Jinelle’s bus is on time is mc003-1.jpg, and the probability that Mr. Corney is driving the bus is mc003-2.jpg.  What is the probability that on any given day Jinelle’s bus is on time and Mr. Corney is the driver?
a)
mc003-4.jpg
c)
mc003-6.jpg
b)
mc003-5.jpg
d)
mc003-7.jpg
 

 4 

The probability it will rain tomorrow is mc004-1.jpg.  The probability that our team will win tomorrow’s basketball game is mc004-2.jpg.  Which expression represents the probability that it will rain and that our team will not win the game?
a)
mc004-3.jpg
c)
mc004-5.jpg
b)
mc004-4.jpg
d)
mc004-6.jpg
 

 5 

The probability that it will snow on Sunday is mc005-1.jpg.  The probability that it will snow on both Sunday and Monday is mc005-2.jpg.  What is the probability that it will snow on Monday, if it snowed on Sunday?
a)
mc005-4.jpg
c)
mc005-5.jpg
b)
2
d)
mc005-6.jpg
 

 6 

A student council has seven officers, of which five are girls and two are boys.  If two officers are chosen at random to attend a meeting with the principal, what is the probability that the first officer chosen is a girl and the second is a boy?
a)
mc006-2.jpg
c)
mc006-4.jpg
b)
mc006-3.jpg
d)
mc006-5.jpg
 

 7 

Bob and Laquisha have volunteered to serve on the Junior Prom Committee. The names of twenty volunteers, including Bob and Laquisha, are put into a bowl. If two names are randomly drawn from the bowl without replacement, what is the probability that Bob’s name will be drawn first and Laquisha’s name will be drawn second?
a)
mc007-1.jpg
c)
mc007-3.jpg
b)
mc007-2.jpg
d)
mc007-4.jpg
 

 8 

Three fair coins are tossed.  What is the probability that two heads and one tail appear?
a)
mc008-1.jpg
c)
mc008-3.jpg
b)
mc008-2.jpg
d)
mc008-4.jpg
 

 9 

Throughout history, many people have contributed to the development of mathematics.  These mathematicians include Pythagoras, Euclid, Hypatia, Euler, Einstein, Agnesi, Fibonacci, and Pascal.  What is the probability that a mathematician’s name selected at random from those listed will start with either the letter E or the letter A?
a)
mc009-1.jpg
c)
mc009-3.jpg
b)
mc009-2.jpg
d)
mc009-4.jpg
 

 10 

The faces of a cube are numbered from 1 to 6.  If the cube is tossed once, what is the probability that a prime number or a number divisible by 2 is obtained?
a)
mc010-5.jpg
c)
mc010-7.jpg
b)
mc010-6.jpg
d)
mc010-8.jpg
 

 11 

At a school fair, the spinner represented in the accompanying diagram is spun twice.

mc011-1.jpg

What is the probability that it will land in section G the first time and then in section B the second time?
a)
mc011-3.jpg
c)
mc011-5.jpg
b)
mc011-4.jpg
d)
mc011-6.jpg
 

 12 

Keisha is playing a game using a wheel divided into eight equal sectors, as shown in the diagram below.  Each time the spinner lands on orange, she will win a prize.

mc012-1.jpg

If Keisha spins this wheel twice, what is the probability she will win a prize on both spins?
a)
mc012-3.jpg
c)
mc012-5.jpg
b)
mc012-4.jpg
d)
mc012-6.jpg
 



 
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