SOLUTION: The number of items sold per day at a retail store, with its corresponding probabilities, Numbers of items sold is 19, 20, 21, 22, 23. Probability is 0.20, 0.20, 0.20, 0.20, 0.20.

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Question 1178075: The number of items sold per day at a retail store, with its corresponding probabilities, Numbers of items sold is 19, 20, 21, 22, 23. Probability is 0.20, 0.20, 0.20, 0.20, 0.20. Find the mean, variance and standard deviation of the probability distribution.
Answer by ikleyn(52905) (Show Source): You can put this solution on YOUR website!
.

Apply the standard formulas.

It is PURE MECHANICAL job and PURE MECHANICAL calculations.

It is not a tutors' job.

It is the student's job.

Making calculations is the students' privilege and honor duty.

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