The random variable KK has a geometric distribution with mean 16. Which of the following is closest to the standard deviation of
random variable KK ?
A. 0.0625
B. 0.9375
C. 4
D. 15.49
E. 240
1 answer:
Answer:
E 240
Step-by-step explanation:
Geometric Distribution mean = (1- p) / p
16 = (1 - p) / p
16p = 1 - p ; 17p = 1 ; p = 1/17 = 0.058
Standard Deviation = (1 - p) / p^2
= (1 - 0.058) / (0.058)^2
0.942 / 0.003364
= 280 , closest to 240
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