Assume that when adults with smartphones are randomly selected, 56% use them in meetings or classes. If 10 adult smartphone users are randomly selected, find the probability that at least 4 of them use their smartphones in meetings or classes. The probability is (Round to four decimal places as needed.)
Solution:
A binomial with,
n = 10
p = 0.56
P(X 4)
= 1 - BINOM.DIST(3,10,0.56,TRUE)
= 0.9092
Probability = 0.9092
Assume that when adults with smartphones are randomly selected, 56% use them in meetings or classes....
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