Question

The probability of winning a certain lottery is 1/72,639. For people who play 664 times find the standard deviation for the number of wins

Answer 1

0.0956

Explanation:

The probability of winning a certain lottery is 1/72,639. For people who play 664 times,

find the standard deviation for the random variable X, the number of wins.

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std =
`√(npq)` = sqr
`√(664*(1/72,639)(72,638/72,639))`

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= 0.0956