SOLUTION: The probability that an adult possesses a credit card is 0.79. A researcher selects four adults at random. The probability (rounded to three decimal places) that three of the four

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Question 1072464: The probability that an adult possesses a credit card is 0.79. A researcher selects four adults at random. The probability (rounded to three decimal places) that three of the four adults possess a credit card is
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
It is 4*(0.79)^3(0.21)=0.414. There are 4 ways the 3 may be chosen.
For dice
1/36 for 2, increasing by 1/36 for each sum up to 7, which is 6/36, or 1/6.
Then from 8 to 12, it decreases by 1/36 for each until it is 1/36 for 12.