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A lot of 100 watches is known to have 10...

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

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To solve the problem of finding the probability of selecting at least one defective watch when 8 watches are selected (with replacement) from a lot of 100 watches that contains 10 defective watches, we can follow these steps: ### Step 1: Understand the Problem We have a total of 100 watches, out of which 10 are defective. We will select 8 watches one by one with replacement. We need to find the probability of getting at least one defective watch in those 8 selections. ### Step 2: Calculate the Probability of Selecting a Defective Watch The probability \( p \) of selecting a defective watch is given by the ratio of defective watches to the total number of watches: \[ ...
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