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For binomial distribution with mean 20 and Standard deviation 4 , number of trials are

  • Option 1)

    20

  • Option 2)

    50

  • Option 3)

    100

  • Option 4)

    None

 

Answers (1)

best_answer

 

Random Experiment -

If an experiment is performed many times under similar conditions and the outcome of each time is not the same, then this experiment is called a random experiment.

Example : Tossing of a fair coin.

-

 

 we know that mean = nP

and standard deviation =\sqrt{nPq}

given that 

\\nP = 2D \\ nPq=16 \\ q=\frac{16}{20}=\frac{4}{5} \\ P= 1-\frac{4}{5}=\frac{1}{5} \\ \therefore n=100

 


Option 1)

20

This option is incorrect

Option 2)

50

This option is incorrect

Option 3)

100

This option is correct

Option 4)

None

This option is incorrect

Posted by

Aadil

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