Evaluate the expression.
- 
A. 720
B. 0
C. 362,880
D. 6
Answer: B
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Add or subtract as indicated. Simplify, if necessary.- 
- 
A. - 
B. 
C. 
D. - 
Find the weighted mean. Round to the nearest tenth.
A. 23.9 B. 27.3 C. 23.3 D. 7.1
Match the following reasons to complete the proof.
?2 ? ?4 ______________________
Use Bayes' rule to find the indicated probability.Quality Motors has three plants. Plant 1 produces 35% of the car output, plant 2 produces 20% and plant 3 produces the remaining 45%. One percent of the output of plant 1 is defective, 1.8% of the output of plant 2 is defective and 2% of the output of plant 3 is defective. The annual total production of Quality Motors is 1,000,000 cars. A car chosen at random from the annual output and is found defection. What is the probability that it came from plant 2?
A. 0.35 B. 0.559 C. 0.224 D. 0.217