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28 Nov 2020

A Compute and interpret the mean of the random variable x

**B** Compute the standard deviation of the random variable x.

C. What is the probability that a randomly selected student has a parent involved in three activities?

D What is the probability that a randomly selected student has a parent involved in three or four activities?

E.

In the following probability distribution, the random variable x represents the number of activities a K to the 5th-grade student is involved in.

Complete parts (a) through (f) below.

**x 0 1 2 3 4**

P(x) 0.299 0.145 0.234 0.053 0.269

(a) Verify that this a discrete probability distribution.

A Compute and interpret the mean of the random variable x

**B** Compute the standard deviation of the random variable x.

C. What is the probability that a randomly selected student has a parent involved in three activities?

D What is the probability that a randomly selected student has a parent involved in three or four activities?

E.

In the following probability distribution, the random variable x represents the number of activities a K to the 5th-grade student is involved in.

Complete parts (a) through (f) below.

**x 0 1 2 3 4**

P(x) 0.299 0.145 0.234 0.053 0.269

(a) Verify that this a discrete probability distribution.

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