coffee is decaffeinated in a (92+-1)% what is the probability of finding three cans with more than 92% coffee?
take this as a random sample of three cans over a 1000 cans lot
take this as a random sample of three cans over a 1000 cans lot
Anonymous
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The probability to find cans with over 92% coffee is a big ZERO !
Because the coffee is being decaffeinated in a 91-93%, looks like the coffee % left in any random can is between 7-9%, so nothing over 92%.
That's how this question must be looked at by the way it's asked.