Q23 of 108 Page 271

A lot of 100 watches is known to have 10 defective watches. If 8 watches are selected (one by one with replacement) at random, what is the probability that there will be at least one defective watch?

given that 10 defective watches in 100 watches


probability of defective watch from a lot of 100 watch


∴


We know






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The probability distribution of a random variable X is given below:


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