Solve the problem.Kim decided to do some spring cleaning. She spent 
hours cleaning her garage on Saturday. The next day she spent 
hours cleaning her basement. What was the total amount of time she spent cleaning that weekend?
A. 2
hours
B. 5
hours
C. 4 hours
D. 5 hours
Answer: D
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Evaluate.
× 
× 
A. 
B. 
C. 
D. 
Find the length of the third side of the right triangle. Where appropriate, give both an exact answer and an approximation to three decimal places.
A. 19 B. 11 C. 14 D. 20
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
Solve the problem.For some reason the quality of production decreases as the year progresses at a light bulb manufacturing plant. The following data represent the percentage of defective light bulbs produced at a light bulb manufacturing plant in the corresponding month of the year. 
Use the equation of the least squares line to predict in which month the percentage of defective light bulbs would be 1.83%.
A. May B. February C. April D. March