Researchers collected data on the numbers of hospital admissions resulting from motor vehicle​ crashes, and results are given below for Fridays on the 6th of a month and Fridays on the following 13th...





Researchers collected data on the numbers of hospital admissions resulting from motor vehicle​ crashes, and results are given below for Fridays on the 6th of a month and Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim that when the 13th day of a month falls on a​ Friday, the numbers of hospital admissions from motor vehicle crashes are not affected.


























Friday the​ 6th:


99


66


10


10


4


5




Friday the​ 13th:


14


13


12


9


6


13






What are the hypotheses for this​ test?





Find the value of the test statistic.



t=

​(Round to three decimal places as​ needed.)






 Find the two critical values:


Is there is not sufficient evidence to warrant rejection of the null hypothesis?


















Jun 01, 2022
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