Finding and Interpreting Mean, Variance, and Standard

Chapter 4, Problem 28E

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QUESTION:

Problem 28E

Finding and Interpreting Mean, Variance, and Standard Deviation In Exercise, find the (a) mean, (b) variance and (c) standard deviation of the binomial distribution for the given random variable, and (d) interpret the results.

Potentially Offensive Songs Sixty-nine percent of adults think that musicians should be allowed to sing potentially offensive songs. You randomly select four adults and ask them whether they think musicians should be allowed to sing potentially offensive songs. The random variable represents the number of adults who think musicians should be allowed to sing potentially offensive songs.

 

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QUESTION:

Problem 28E

Finding and Interpreting Mean, Variance, and Standard Deviation In Exercise, find the (a) mean, (b) variance and (c) standard deviation of the binomial distribution for the given random variable, and (d) interpret the results.

Potentially Offensive Songs Sixty-nine percent of adults think that musicians should be allowed to sing potentially offensive songs. You randomly select four adults and ask them whether they think musicians should be allowed to sing potentially offensive songs. The random variable represents the number of adults who think musicians should be allowed to sing potentially offensive songs.

 

ANSWER:

Answer

Step 1 of 4

Sixty-nine percent of adults think that musicians should be allowed to sing potentially offensive songs.

Four adults are randomly selected and ask them whether they think musicians should be allowed to sing potentially offensive songs.

Here the random variable represents the number of adults who think musicians should be allowed to sing potentially offensive songs.

We are asked to find the following:

  1. Mean
  2. Variance
  3. Standard deviation

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