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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A. 
x4 + C
B. 
x6 + C
C. 6x6 + C
D. 5x4 + C
Mathematics
Solve the problem.A plane flies 400 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 25 mph, what is the speed of the plane in calm air?
A. 375 mph B. 400 mph C. 380 mph D. 365 mph
Mathematics
Add and simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics
Subtract.940 - 71
A. 869 B. 859 C. 881 D. 969
Mathematics