According to a survey, about 47% of U. S. adults make a phone call each day. (Pew Research Center). You ask 5 randomly chosen U. S. adults whether they made a phone
call the previous day.
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Use the following formula to answer the following questions.
K and r= number of successes, n = number of people surveyed,
p= Probability.
P(k successes) = Cr pi(1 - p)n-k
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a) Draw a histogram of the binomial distribution for your survey.
b)
What is the most likely outcome?
c) What is the probability that at most 2 people have sent a text?