The probability that a randomly selected individual in a certain community has m

Question

The probability that a randomly selected individual in a certain community has made an online purchase is 0.48 Suppose that a sample of 10 people from the community is selected, what is the probability that at most 3 of them has made an online purchase? Write only a number as your answer. Round to 2 decimal places example 0.24). Do not write as a percentage. At International of the flights arrive on time. A sample of 11 flights is studied. What is the probability that more than arrived on time? Write only a number as your answer. Round to 2 decimal places (for example 0.24). Do not write as a percentage.

Explanation / Answer

Q5. ANS IS 0.21

Excel formula: "=BINOMDIST(3,10,0.48,TRUE)"

Q6: ans is 0.86:

Excel formula: "=1-BINOMDIST(3,11,0.48,TRUE)"

p= 0.48 n= 10 p(x<=3)= 0.206652

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