conduct of a statistical study that tends to favor certain results. The question I posed for scenario 5 was “Does Friday the 13 th have any significant effect on car accidents versus Friday the 6 th within the years of between July 1990 and November 1992?” To answer this, I am going to use a two-sample t-test because it reveals if the averages of the two groups to be compared. In other words, this test is applied to compare whether the average difference between two groups is significant or if it is due to random chance. 3. We can either: ( H 0 ) find no statistical relationship between the two variables and the results were mere chance being due to sampling or experimental error or ( H a ) the observations are the result of the real effect of the superstition of unlucky days. This means that there is no correlation between Friday the 13 th and traffic incidents or there is a significant difference that suggests a correlation and causality of Friday the 13 th being an unlucky day.
References Bennett, J., Briggs, W., and Mario, T. (n.d.). Statistical Reasonings for Everyday Life. [Pearson eText] Simmons, A. (2019). The Disadvantages of a Small Sample Size. Retrieved June 05, 2020, from
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- Fall '15
- Statistics, Friday the 13th, Luck