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The average number of accidents at controlled intersections per year is 4.3. Is this average less...

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Statistics

The average number of accidents at controlled intersections peryear is 4.3. Is this average less for intersections with camerasinstalled? The 43 randomly observed intersections with camerasinstalled had an average of 3.7 accidents per year and the standarddeviation was 1.47. What can be concluded at the αα = 0.01 level ofsignificance?

Can you please explain the steps of how to obtain the P valueand test statistic using a graphing calculator?

Answer & Explanation Solved by verified expert
4.2 Ratings (860 Votes)
n 43The test hypothesis isNow the value of test static can be found out by followingformulaUsing    See Answer
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