In a survey of consumers aged 12 and older, respondents were asked how many cell

Question

In a survey of consumers aged 12 and older, respondents were asked how many cell phones were in use by the household. (No two respondents were from the same household.) Among the respondents, 207 answered "none," 279 said "one," 365 said "two," 134 said "three," and 59 responded with four or more. A survey respondent is selected at random. Find the probability that his/her household has four or more cell phones in use. Is it unlikely for a household to have four or more cell phones in use? Consider an event to be unlikely if its probability is less than or equal to 0.05.

Explanation / Answer

probability that his/her household has four or more cell phones in use

= 59 / (207 +279 + 365 + 134 +59)

=0.056513

No, because the probability of a respondent with four or more cell phones in use is greater than 0.05.

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