The expected value of the following probability distribution is ______.
0
5
8
0.22
0.15
0.30
0.25
A. 0.75
B. 2.50
C. 4.16
D. 2.84
Answer: D
Mathematics
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Find k such that the function is a probability density function over the given interval.f(x) = kex, 0 ? x ? 11
A. e11 - 1
B. 
C. 
D. 
Mathematics
Find fx, fy, and fz.f(x, y, z) = xz
A. fx = z
; fy = 
; fz = x
B. fx = z
; fy = - 
; fz = x
C. fx = z
; fy = 
; fz = x
D. fx = z
; fy = - 
; fz = x
Mathematics
Provide an appropriate response.Scientific notation is useful with very large numbers. Explain another way that scientific notation is useful.
What will be an ideal response?
Mathematics
Solve the problem.A twenty-five foot ladder just reaches the top of a house and forms an angle of 41.5° with the wall of the house. How tall is the house? Round your answer to the nearest 0.1 foot.
A. 19 ft B. 18.7 ft C. 18.8 ft D. 18.6 ft
Mathematics