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 YearDid Not Have an Accident in the Last YearUses a cell phone47320Does not use a cell phone42221State the null hypothesis (Choose 1 or 2.) (Choose 1 or 2)There is no relationship between phone use and accidents.2. There is a relationship between phone use and accidents. State the decision rule using 0.05 significance level.(Round your answer to 3 decimal places.) Reject H0 if chi square is greater than Compute the value of chi-square.(Round your answer to 3 decimal places.) What is your decision regarding H0? (Choose 1 or 2)RejectH02. Fail to RejectH0What is your conclusion? (Choose 1 or 2)There is no relationship between phone use and accidents.There relationship between phone use and accidents.

Given: had did not have Total use 47 320 367 do not use 42 221 263 Total 89 541 630

Answered: The use of cellular phones in…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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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	47	320
Does not use a cell phone	42	221

State the null hypothesis (Choose 1 or 2.) (Choose 1 or 2)
There is no relationship between phone use and accidents.
2. There is a relationship between phone use and accidents.

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

Reject H₀ if chi square is greater than

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

What is your decision regarding H₀? (Choose 1 or 2)
RejectH₀
2. Fail to RejectH₀
What is your conclusion? (Choose 1 or 2)
There is no relationship between phone use and accidents.
There relationship between phone use and accidents.

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