The following is a probability distribution of the number of tails in three tosses of a coin. Find the mean and standard deviation. You can
The following is a probability distribution of the number of tails in three tosses of a coin. Find the mean and standard deviation. You can use your calculator or the formulas. X 0 1 2 3 P(x) 1/8 3/8 3/8 1/8 Round both answers to one decimal place. You may use a calculator. The mean of the random variable is The standard deviation of a random variable is
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