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A factory makes car batteries. The probability that a battery is delective is 1/ 11 If 500 batteries are tested, about how many are expected to be defective? OA. 11 O B. 45O C. 489 OD. 30

Respuesta :

Solution

For this case the expected value is given by:

[tex]E(x)=np[/tex]

And replacing n = 500 and P = 1/11 we got:

E(x)= 500 * 1/11= 45.45

Then the best answer would be:

B. 45

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