Use a 0.05 significance level to test the claim that when the 13th of the month falls on a Friday, the number of storms is not affected.
A random Friday Friday the 13th
12 9
15 21
12 13
8 7
2 3
6 8
Should we reject the null hypothesis that when the 13th of the month is on a Friday, the number of storms is not affected at a significance level of a=0.05?
a No, because the test statistic is less than or equal to the critical value.
b No, because the test statistic is greater than the critical value.
c Yes, because the test statistic is greater than the critical value.
d Yes, because the test statistic is less than or equal to the critical value.
