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 ?

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?

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

In a pack of 10 watches, 3 are known ot be defective. If 2 watches are selected at random from the pack, what is the probability that at least one is defective ?

Lot of 100 items contains 10 defective items.Five itwms are selected at random from the lot and sent to the retail store.What is the probability that the store will receive at most one defective item?

A machine manufactures some items in a day of which 5% are defective. 10 items are checked one by one with replacement. Find the probability that there is atleast on defective item.

A machine manufactures some items in a day of which 5% are defective. 10 items are checked one by one with replacement. Find the probability that there is atleast on defective item.

A lot of 100 bulbs from a manufacturing process is known to contain 10 defective and 90 non-defective bulbs . If 8 bulbs are selected at random, what is the probability that . (a) there will be three defective and 5 non defective bulbs. (b) there will be atleast one defecitve bulb.

A lot of 10 electronic components is known to include 3 defective parts.If a sample of 4 components is selected at random from the lot, what is the probability that this sample does not contain more than one detectives?