The following data shows numbers of hospital admissions resulting from car crashes on Fridays on the 6^th of a month and Fridays on the following 13^th of the same month. At the 10% significance level, do the data provide sufficient evidence to conclude that when the 13^th day of the month falls on Friday, the numbers of hospital admission from car crashes are different? Preliminary studies have shown that the difference in number of hospitals admissions for car crashes on different days is approximately normally distributed. Use the calculator Shortcut

Friday the 6^th of the month

9

6

11

11

3

5

Friday the 13^th of the same month

13

12

14

10

4

12