Use Bayes' rule to find the indicated probability.Two stores sell a certain MP3 players. Store A has 34% of the sales, 5% of which are of defective items, and store B has 66% of the sales, 1% of which are of defective items. The difference in defective rates is due to different levels of pre-sale checking of the product. A person receives a defective item of this product as a gift. What is the probability it came from store B?
A. 0.275
B. 0.22
C. 0.5667
D. 0.7083
Answer: A
Mathematics
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Solve the problem. Round your answer to the nearest tenth unless otherwise indicated.Thompson's Hardware spent $40,570 this year on business insurance alone. If total sales were $707,800, what percent of total sales was spent on business insurance? Round to the nearest tenth of a percent.
A. 5.7% B. 17.4% C. 174.0% D. 0.6%
Mathematics
Find the first and second derivatives of the function.
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?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Perform the operation and reduce to lowest terms.6 × 3
A. 18
B. 18
C. 9
D. 18
Mathematics
Graph the equation.y = -2x2
A. 
B. 
C. 
D. 
Mathematics