Births. Randomly selected births records were obtained and results are listed in the table below (based on data from the National Vital statistics Report, Vol. 49, No.1). Use a 0.05 significance level to test the reasonable claim that births occur with equal frequency on the different days of the week. How might the apparent lower frequencies on Saturday and Sunday be explained?
Day Sunday Monday Tues Wed Thurs Fri Sat
Births 36 55 62 60 60 58 48
The solution gives the details of chi square test of independence of birth data. Null hypothesis, alternative hypothesis, critical value, test statistic and P value are given.