Estimate the variance for the following probability distribution to two decimal places.
?
x0123Pr(x)
?
A. 2.16
B. 1.33
C. 1.16
D. 1.78
E. 1.00
Answer: B
Mathematics
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Decide if the situation is a permutation or a combination and then answer the question.A signal is made by placing 3 flags, one above the other, on a flag pole. If there are 6 different flags available, how many possible signals can be flown?
A. Permutation; 18 B. Combination; 216 C. Permutation; 120 D. Combination; 20
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Solve.The price of a shirt was reduced from $58.10 to $34.86 . What was the percent of decrease in the price?
A. 40% B. 41% C. 42% D. 4%
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Solve.log3 
= y
A. {-27} B. {3} C. {9} D. {-3}
Mathematics