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STATISTICS AND PROBABILITY

Lesson: Calculating Mean and Variance of a Discrete Random Variable.

PROBLEM:

• The number of shoes sold per day at a retail store is shown in the table above, in the picture. SHOW YOUR SOLUTION.

FIND:

• Mean
• Variance
• Standard Deviation

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ANSWER:

Mean: Z(X)=20.3

Variance: D(X)=825.99

Standard Deviation: T=28.74

See the solution in the photo above.

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-PA BRAINLIEST