Many people believe that fatal DWI crashes occur because of casual drinkers who tend to binge on Friday and Saturday nights, whereas others believe that fatal DWI crashes are caused by alcoholics who drink every day of the week. In a study of fatal car crashes, 216 cases are randomly selected from the pool in which the driver was found to have a blood alcohol content over 0.10. These cases are broken down according to the day of the week, with the results listed below. Using a 0.05 significance level, you need to test the claim that such fatal crashes occur on the different days of the week with equal frequency.

Day SUN MON TUES WED THURS FRI SAT Number40 24 25 28 29 32 38

34. What is the expected frequency of fatal car crashes on Friday?