Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 5 - Discrete Probability Distributions - 5-3 Binomial Probability Distributions - Basic Skills and Concepts: 11

Answer

The probability distribution is binomial.

Work Step by Step

A probability distribution is binomial if each event can have 2 outcomes only. Here, the response can have 2 outcomes, either a smartphone has been or has not been selected. Although the selections are not independent, they can be treated as independent by the 5% guideline, because 380 users are a lot less then 5%of smartphone users. Therefore the probability distribution is binomial.
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