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A recent study indicated that 30% of teenagers have cooked family dinner in the past month....

A recent study indicated that 30% of teenagers have cooked family dinner in the past month. In a random sample of 20 teenagers, what is the probability that

  1. .exactly 6 have cooked dinner in the past month? (round your answer to 3 decimal places)  
  2. fewer than 4 have cooked dinner in the past month? (round your answer to 3 decimal places)  
  3. at least 9 but no more than 12 have cooked dinner in the past month? (round your answer to 3 decimal places)  
Math   Statistics-And-Probability   
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