The use of cellular phones in automobiles has increased dramatically in the last few years. Of concern to traffic experts, as well as to manufacturers of cellular phones, is the effect on accident rates. Is someone who is using a cellular phone more likely to be involved in a traffic accident? What is your conclusion from the following sample information? Use the 0.05 significance level.
The use of cellular phones in automobiles has increased dramatically in the last few years. Of concern to traffic experts, as well as to manufacturers of cellular phones, is the effect on accident rates. Is someone who is using a cellular phone more likely to be involved in a traffic accident? What is your conclusion from the following sample information? Use the 0.05 significance level.
| Had Accident in the Last Year | Did Not Have an Accident in the Last Year | ||
| Uses a cell phone | 17 | 219 | |
| Does not use a cell phone | 51 | 310 | |
H0: There is no relationship between phone use and accidents.
H1: There is a relationship between phone use and accidents.
a. State the decision rule using 0.05 significance level. (Round your answer to 3 decimal places.)
b. Compute the value of chi-square. (Round your answer to 3 decimal places.)
c. What is your decision regarding H0?
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