Solve the problem.Suppose that a family has 5 children and that the probability of having a girl is 
. What is the probability of having at least three boys?
A. 0.3125
B. 0.5000
C. 0.1563
D. 0.4688
Answer: B
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Express the integrand as a sum of partial fractions and evaluate the integral.
A. 
ln 
+ C
B. 
ln 
+ C
C. ln 
+ C
D. 
ln 
+ C
Set up an integral for the length of the curve.y = 2 cot x, 
? x ? 
A. 
B. 
C. 
D. 
Solve the problem.There are 3 cards in a hat; one is a king, one is a queen, and one is an ace. Two cards are to be selected at random without replacement. Using a tree diagram , obtain the sample space for the experiment. Then, find the probability that you choose the same card twice.
A. 0
B. 
C. 
D. 
Solve the problem. Round rates to the nearest tenth of a percent and dollar amounts to the nearest cent.A local dealer sells baseballs for $25 each. If $21.77 is the cost, what is the percent of markup on the cost?
A. 147.1% B. 14.8% C. 87.1% D. 12.9%