Statistics Self Evaluation Test Statistics Question 27
Question: A fair die is tossed 180 times, the standard deviation of the number of sixes equal to
Options:
A) $ \sqrt{30} $
B) 5
C) 25
D) $ \sqrt{90} $
Answer:
Correct Answer: B
Solution:
[b] $ n=180,p=P $ (getting a six) $ =\frac{1}{6} $ and $ q=\frac{5}{6} $ So, S.D. $ =\sqrt{npq} $
BETA
