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  • Please,please help me A die is tossed 5 times. Getting an odd number is considered a success. Then the variance of distribution of success is

A die is tossed 5 times. Getting an odd number is considered a success. Then the variance of distribution of success is

  • Option 1)

    8/3

  • Option 2)

    3/8

  • Option 3)

    4/5

  • Option 4)

    5/4

 

Answers (1)

best_answer

As we learnt in

Binomial Distribution(Statistical) -

Mean = np

Variance = npq

Standard \: deviation =\sqrt{npq}

-

 

 Variance = npq

here, n =5

p=\frac{1}{2}

q=\frac{1}{2}

Thus, variance =5\times\frac{1}{2}\times\frac{1}{2}=\frac{5}{4}


Option 1)

8/3

Incorrect option    

Option 2)

3/8

Incorrect option    

Option 3)

4/5

Incorrect option    

Option 4)

5/4

Correct option    

Posted by

Plabita

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