A PDF for a continuous random variable X is given. Use the PDF to find E(X).f(x) = 
A. 
B. 
C. 
D. 1
Answer: B
Mathematics
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Answer the question.A proposed amendment to the U.S. Constitution has passed both the House and the Senate with the required 2/3 super majority. Each state holds a vote on the amendment and it receives a majority vote in all but 13 of the 50 states. Is the Constitution amended?
A. Yes B. No
Mathematics
Solve the equation.
= y
A. {2} B. {6, -4} C. {6} D. ?
Mathematics
The weights of newborn babies are distributed normally , with a mean of approximately 100 oz and a standard deviation of 20 oz . If a newborn baby is selected at random , what is the probability that the baby weighs less than 160 oz ?
Mathematics
Solve the equation.
+ 
= 
A. - 
B. 
C. 
D. No solution
Mathematics