Solution: The given random experiment follows Binomial distribution with 
Let
be the number of adults who use their smartphones in meetings or classes.
Therefore, we have to find:

We know the binomial model is:






Therefore, the probability that fewer than 3 of them is 0.1111
Answer:
0.44444444444, round it to the tenth or hundredth or wherever it tells you to round the answers to.
Answer:
Step-by-step explanation:
Answer:
13
Step-by-step explanation: