Solved: Determine the probability distribution of the random varible, Basic Statistics

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Determine the probability distribution of the random varible

Discussion:

Frequency tables

1. Grade,

x Freq Probability P(x) xP(x) (x-µ )sqP(x)

9 3604

10 3131

11 2749

12 2488

Total µ= sigma sq=

Determine the probability distribution of the random varible x.

What is the probability taht a randomly selected student is either in the 9th or 10th grade?

What is the probability that a randomly selected student is in at most 11th grade?

Find the mean and standard deviation of the random variable x.

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Basic Statistics: Determine the probability distribution of the random varible

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