Question

in a national survey college students were asked, \how often do you wear a seat belt when riding in a car driven by someone else?\ the response frequencies appear in the table to the right. (a) construct a probability model for seat - belt use by a passenger. (b) would you consider it unusual to find a college student who never wears a seat belt when riding in a car driven by someone else? (a) complete the table below

Explanation:

Step1: Calculate the total number of responses

The total number of responses is \(112 + 310+564 + 1133+2614=4733\).

Step2: Calculate the probability for "Sometimes"

The probability \(P\) of an event is given by \(P=\frac{\text{Frequency}}{\text{Total Frequency}}\). For the "Sometimes" response, with frequency \(f = 564\) and total frequency \(N=4733\), the probability is \(P=\frac{564}{4733}\approx0.119\).

Answer:

\(0.119\)