Find the expected value of the probability density function to the nearest hundredth.f(x) = 
- 
; [2, 6]
A. 4.67
B. 4.33
C. 5.00
D. 4.00
Answer: A
Mathematics
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Find the focus and directrix of the parabola.x = 7y2
A. 
, x = 
B. 
, x = - 
C. 
, y = - 
D. 
, x = - 
Mathematics
Evaluate the integral.
A. 16
B. 16(e3 - e)
C. -16
D. 32
Mathematics
Calculate the flow in the field F along the path C.F = (x - y)i - (x2 + y2)j; C is curve from (4, 0) to (-4, 0) on the upper half of the circle x2 + y2 = 16
A. - 8?
B. 8?
C. 16?
D. 
Mathematics
For an election with four candidates (A, B, C, and D) we have the following preference schedule:
The ranking of the candidates using the plurality-with-elimination method is
A. first: C; second: A; third: D; fourth: B. B. first: C; second: A; third: B; fourth: D. C. first: C; second: D; third: A; fourth: B. D. first: D; second: C; third: A; fourth: B. E. none of these
Mathematics