About 2 out of every 3 children take some kind of lessons outside of school. These lessons

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About 2 out of every 3 children take some kind of lessons outside of school. These lessons include music, art, and sports. Find the mean and standard deviation of the distribution of the number of children who take lessons outside of school.


The mean of a geometric distribution is μ = 1/p, and the standard deviation is σ = √q/p2, where p = the probability of the outcome and q = 1 − p.

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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