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Data has been collected on the number of hospital admissions resulting from car accidents for Fridays...

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Statistics

Data has been collected on the number of hospital admissionsresulting from car accidents for Fridays on the 6th ofthe month and Fridays on the following 13th of the samemonth. Test the superstition that there is a difference between themean admissions on the two days. Let alpha be .05.

6th                    13th

9                     13

6                     12

11                   14

11                   10

3                     4

5                     12

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