Use the given row transformation to change the matrix as indicated.
; -2 times row 1 added to row 2
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.Find the volume of the solid generated by revolving the region bounded by the curve 
and the 
about the x-axis.
A. 
?3
B. 9?2
C. 
?2
D. 9?
Answer the question based on the following situation:An honest coin is tossed 1600 times. The random variable X denotes the total number of heads that come up in the 1600 tosses.What are the chances that X is less than 600?
A. approximately 25% B. approximately 0% C. approximately 16% D. approximately 32% E. none of these
Find the average of the list of numbers.80, 74, 66, 70, 80
A. 73 B. 80 C. 74 D. 66
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