The question of whether Friday the 13th is an unusually unlucky day or whether this idea is just superstition was evaluated. Researchers in the United Kingdom examined the relation between (a) numbers of traffic accidents on past Friday the 13ths versus (b) numbers of accidents occurring on Friday the 6ths (all between July 1990 and November 1992). Friday the 6th     Friday the 13th 139,246               138,548 134,012               132,908 137,055               136,018 133,732               131,843 123,552               121,641 121,139               118,723 128,293               125,532 124,631               120,249 124,609               122,770 117,584               117,263    What is the sample size? Select a statistical procedure for this scenario. Correlation, paired sample t-test, or two sample t-test

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The question of whether Friday the 13th is an unusually unlucky day or whether this idea is just superstition was evaluated. Researchers in the United Kingdom examined the relation between (a) numbers of traffic accidents on past Friday the 13ths versus (b) numbers of accidents occurring on
Friday the 6ths (all between July 1990 and November 1992).
Friday the 6th     Friday the 13th
139,246               138,548
134,012               132,908
137,055               136,018
133,732               131,843
123,552               121,641
121,139               118,723
128,293               125,532
124,631               120,249
124,609               122,770
117,584               117,263 

 

What is the sample size?

Select a statistical procedure for this scenario. Correlation, paired sample t-test, or two sample t-test

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