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Assume that when adults with smartphones are randomly selected,
41% use them in meetings or classes. If 7 adult smartphone users are randomly selected,
find the probability that exactly 2 of them use their smartphones in meetings or classes.
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It is a binomial type probability distribution problem.
The number of trial n= 7; the probability of the success trial is 0.41, and the number of success trials k = 2.
P = = = 0.2524 = 25.24% (rounded). ANSWER
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To see many other similar solved problems, look into the lessons
- Simple and simplest probability problems on Binomial distribution
- Typical binomial distribution probability problems
in this site.