Assume that when adults with smartphones are randomly selected, 58% use them in meetings or classes. If 12
adult smartphone users are randomly selected, find the probability that fewer than 44 of them use their smartphones in meetings or classes.
The probability is?
Answer:
Given that,
Assume that when adults with smartphones are randomly selected, 58% use them in meetings or classes.
If 12 adult smartphone users are randomly selected.
The probability that fewer than 44 of them use their smartphones in meetings or classes:
n=12
p=0.58
The probability would be calculated as followed:
By using standard normal table, the probability would be:
P(Z<-2.18)=0.0146
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