Provide an appropriate response.Using the given frequency distribution table, find the grouped mean.Frequency Distribution of 25 Test Scores
Class IntervalMidpointTallyClass Frequency45 - 4947/150 - 5452/155 - 5957//260 - 6462/165 - 6967/170 - 7472//275 - 7977///380 - 8482///385 - 8987///390 - 9492/////595 - 9997///3
A. 180
B. 1,975
C. 72
D. 79
Answer: D
Mathematics
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Graph the solution set on a number line.{x|-4 < x < 0}
A. 
B. 
C. 
D. 
Mathematics
Find the probability.In a batch of 8,000 clock radios 6% are defective. A sample of 11 clock radios is randomly selected without replacement from the 8,000 and tested. The entire batch will be rejected if at least one of those tested is defective. What is the probability that the entire batch will be rejected?
A. 0.506 B. 0.0600 C. 0.0909 D. 0.494
Mathematics
Provide an appropriate response.A computer can do one calculation in 1.4 × 10-7 seconds. Write this number without exponents.
A. 0.000014 B. 14,000,000 C. 0.000000014 D. 0.00000014
Mathematics
Solve the equation by completing the square.8m2 + 15m = 0
A. 
B. 
C. {0}
D. 
Mathematics