Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62
B. 0.26
C. 0.22
D. 0.50
Answer: A
Mathematics
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Use the data set {d1, d2, d3, ..., d255} consisting of 255 numbers to answer the following question(s).After sorting the data set (in increasing order from left to right), the median is
A. the sum of all the numbers divided by 255. B. the average of the numbers in the 127th and 128th positions. C. the number in the 127th position. D. the number in the 128th position. E. none of these
Mathematics
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos 2? = - 
, 
< 2? < ?Find sin ?.
A. - 
B. 
C. 
D. - 
Mathematics
Convert as indicated.2 L to centiliters
A. 20 cl B. 0.02 cl C. 0.2 cl D. 200 cl
Mathematics
Use the quotient rule to divide and simplify.
A. 
B. 
C. 
D. 
Mathematics