Question

assume that when adults with smart phones are randomly selected 56% use them in meetings or classes if seven adult smartphone users are randomly selected find the probability that at least two of them use their smart phones in a meeting or classes

Answer 1

Answer:-

Given that:-

assume that when adults with smart phones are randomly selected 56% use them in meetings or classes if seven adult smartphone users are randomly selected

find the probability that at least two of them use their smart phones in a meeting or classes?

The proportion of adults use their smartphones in meetings or classes p = 0.56

The number of adults are n = 7

Let X be the number of adults use their smartphones in meetings or classes

The probability that at least 2 of them use their smartphones in meetings or classes is

Excel Command : = 1-BINOM.DIST(1.7,0.56, TRUE)

Answer Prob = 0.9684