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15-01-2019
Mathematics

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A coin is to be tossed 36 times what are the mean and standard deviation of the number of heads

Respuesta :

24-01-2019

Answer:

Binomial distribution,

n = 36 independent events,

p = 0.5 probability of success and of failure, as 1-p = p.

Mean of binomial distribution is np=18.

Variance is np(1-p)=9

Standard deviation is sqrt(variance)=3.

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