a.State the decision rule using 0.05 significance level.(Round your answer to 3 decimal places.)

Reject H0 if chi-square > _____________ (ROUND TO 3 DECIMAL PLACES)

b.Compute the value of chi-square.(Round your answer to 3 decimal places.)

c.What is your decision regardingH₀? (choose the correct phrase to complete the sentence)

(Reject, Do not reject) H0. There (is a, is no) relationship between phone use and accidents.

The use of cellular phones in automobiles has increased dramatically in the last few years. Of concern to trafc experts, as well as to manufacturers of cellular phones, is the effect on accident rates. ls 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 signicance level. Had Accident in Did Not Have an Accident in the Last Year the Last Year Uses a cell phone 25 300 Does not use a cell phone 50 400 Click here for the Excel Data File Ho: There is no relationship between phone use and accidents. H1: There is a relationship between phone use and accidents. 3. 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.)