If a gambler places a bet on the number 7 in roulette, he or she has...

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If a gambler places a bet on the number 7 in roulette, he or she has...

If a gambler places a bet on the number 7 in roulette, he or she has a 1/38 probability of winning.

Find the mean and standard deviation for the number of wins of gamblers who bet on the number 7 one hundred and seventy times

The value of the mean is μ=___?

math Statistics-And-Probability

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Answer 1

Answer #1

Answer:

Given that:

If a gambler places a bet on the number 7 in roulette, he or she has a 1/38 probability of winning.

Here X ~ Binomial(n = 170, p=2)

If p= 38 then q=1-p=1-

Mean =

= 170*

= 4.4736

Value of mean = 4.4736

Standard deviation = $\sqrt{npq}$

V170*

= 2.0871

Standard deviation = 2.0871

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Answer 2

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