77​% of U.S. adults think that political correctness is a problem in America today. You randomly select six U.S. adults and ask them whether they think that political correctness is a problem in America today. The random variable represents the number of U.S. adults who think that political correctness is a problem in America today. Answer the questions below.What is the mean? What is the variance? what is the standard deviation?  Interpret the results

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Asked Nov 27, 2019
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77​% of U.S. adults think that political correctness is a problem in America today. You randomly select six U.S. adults and ask them whether they think that political correctness is a problem in America today. The random variable represents the number of U.S. adults who think that political correctness is a problem in America today. Answer the questions below.
What is the mean?
 
What is the variance?
 
what is the standard deviation? 
 
Interpret the results
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Expert Answer

Step 1

The value of mean is 4.62, which is obtained as follows:

Меan 3 пр
= 6(0.77)
=4.62
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Меan 3 пр = 6(0.77) =4.62

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Step 2

The value of variance is 1.0626, which is obtained as follows:

Variance = npq
- пр (1- р)
=6(0.77)(1-0.77)
1.0626
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Variance = npq - пр (1- р) =6(0.77)(1-0.77) 1.0626

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Step 3

The value of Standard deviation is 1.0308, whi...

SD = Inpq
v1.0626
1.0308
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SD = Inpq v1.0626 1.0308

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