Question: (b) Compute the standard deviation 6X. Round your answer to 4 decimal places if necessary. X __ X 8 Fifteen items or less: The number

The number of customers in line at a supermarket express checkout counter

is a random variable with the following probability distribution. X'0123 45 PM

(b) Compute the standard deviation 6X. Round your answer to 4 decimal places if necessary. X __ X 8 Fifteen items or less: The number of customers in line at a supermarket express checkout counter is a random variable with the following probability distribution. X'0123 45 PM 0.10 0.20 0.30 0.20 0.15 0.05

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