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# (Solved): The National Highway Traffic Safety Administration Reported The Percentage Of Traffic Accidents Occu...

The National Highway Traffic Safety Administration reported the percentage of traffic accidents occurring each day of the week. Assume that a sample of 420 accidents provided the following data. Sunday Monday 67 52 Tuesday 53 Wednesday 49 Thursday 5 6 Friday 66 Saturday 77 a. Conduct a hypothesis test to determine if the proportion of traffic accidents is the same for each day of the week. What is the p- value? Compute the value of the x2 test statistic (to 3 decimals). The p-value is - Select your answer - Using a .05 level of significance, what is your conclusion? - Select your answer the proportion of traffic accidents is not the same for each day of the week. b. Compute the percentage of traffic accidents occurring on each day of the week (to 1 decimal). Sunday Monday Tuesday Wednesday Thursday Friday Saturday Percentage of traffic accidents, % What day has the highest percentage of traffic accidents? - Select your answer - Does this seem reasonable? Discuss. - Select your answer - has the highest number of accidents, followed by - Select your answer . This makes sense because these are times when people go out and may be consuming alcohol, having distractions such as more people in their car, and speeding.

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### Expert Answer

(a) (i) The value of the Test Statistic is got as follows: Observed (O) Expected (E) (O - E)2/E 67 60 0.8167 52 60 1.0667 53 60 0.8167 49 60 2.0167 56 60 0.222