Question
Asked Nov 8, 2019
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A normal die is rolled 480 times.   We are concerned with the number of 2's that are observed.

Find the mean.

 

Find the standard deviation rounded to 1 decimal place.

 

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Expert Answer

Step 1

Given:

A die is rolled 480 times,

So, here n = 480

X: number 2’s observed.

Step 2
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1 Here, probability of observing 2 is p = 6 We have to find mean standard deviation

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Step 3

Using binomial distributi...

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Мean %3D пx р Standard deviation уnxрx(1-р)

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