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A die is thrown 100 times. Getting an even number is considered a successes. Find the mean and variance of successes.A. 10B. 25C. 18D. 10 |
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Answer» Correct Answer - B Let `E=` Event of getting an even numbers `={2,4,6}` `n (E)=3` `therefore` Probability of success, `p=(3)/(6)=(1)/(2)` and probability of failure, `q=(1)/(2)` `therefore` Variancce `=npq=100xx(1)/(2)xx(1)/(2)=25` |
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