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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Multiply the polynomials using a special product formula. Express the answer as a single polynomial in standard form.(3x + 5)3
A. 9x6 + 15x3 + 15,625 B. 27x3 + 135x2 + 225x + 125 C. 27x3 + 135x2 + 135x + 125 D. 9x2 + 30x + 25
Mathematics
Rationalize the denominator. Assume all variables have nonzero values.
A. 
B. 
C. 
D. 15
Mathematics
Use the given table to find the indicated probability.People were given three choices of soft drinks and asked to choose one favorite. The following table shows the results.
P(person is over 40 
A. 
B. 
C. 
D. None of the above
Mathematics
Decide if the given point satisfies the system of linear equations.
(2, -1)
A. Yes B. No
Mathematics