Scores on an aptitude test form a normal distribution with a mean of 140 and a standard deviation of 12. Find the per cent that score between 152 and 161.
A. 4.01%
B. 11.86%
C. 15.87%
D. 80.12%
Answer: B
Mathematics
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Use the graph to evaluate the limit.
f(x)
A. -2 B. 2 C. does not exist D. -1
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Solve the problem.A stack of poles has 23 poles in the bottom row, 22 poles in the next row, and so on, with 7 poles in the top row. How many poles are there in the stack?
A. 232 B. 255 C. 248 D. 262
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Choose the closest estimate.200-lb barbell.
A. 400 kg B. 200 kg C. 20 kg D. 100 kg
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Find the frequency when the period is 63.5 æsec.
a. 1.57 KHz b. 15.75 KHz c. 157.5 KHz d. 6.3 KHz e. 635 KHz
Mathematics