A PDF for a continuous random variable X is given. Use the PDF to find E(X).f(x) = 
A. 
B. 1
C. 
D. 
Answer: C
Mathematics
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Use the ratio test to determine if the series converges or diverges.
A. Converges B. Diverges
Mathematics
Solve the problem. Round to the nearest hundredth, if necessary.The average size of the fish in a lake is 10.8 inches, with a standard deviation of 2.9 inches. Find the percentage of fish longer than 16 inches.
A. 3.67% B. 1.79% C. 96.33% D. 21.48%
Mathematics
Solve by factoring and using the principle of zero products.25k2 = 64
A. 
, - 
B. 
, - 
C. 
, 0
D. 8, 0
Mathematics
Predict the number of tick marks on the positive x - axis and the positive y-axis.[-16, 16, 2] by [-24, 24, 2]
A. 12; 8 B. 16; 24 C. 8; 12 D. 24; 16
Mathematics