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connections.fscx YDmyFSCJ session x-Assignments-xy @ Take a Test-EX https://www.mathxl.com/Student/PlayerTest aspx?testld-163.. IO a Online Statistics-Fall 2017 Quiz: Chapter 5 Quiz Submit Quz This Quiz: 13 pts possibl Question Help * This Question: 1 pt 100f 13 (8 complete) Assume that when adults with smartphones are randomly selected, 54% use them in meetings or classes. smartphone users are randomly selected, find the probability that exactly classes 9 adit 2 of them use their smartphones in meetings or The probability is Round to four decimal places as needed.) Enter your answer in the answer box 17

Explanation / Answer

Given :-

p= probability for use smartphone in meeting or classes = 54% = 0.54 ,

n= 9 , Now to find the probability exactly equal to 2.

There fore we can use Binomial Distribution with parameter n and p with probability distribution function is given by,

P(X=x) = nCx * px * (1-p)n-x

So,

P(X=2) = 9C2 *(0.54)2 *(1-0.54)9-2

P(X=2) = 0.0458

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