We take a random sample of 50 from the STA 13 class last year The total number of students was 419 On the final exam the mean score of the sample was 56 3 and the sample standard deviation was 13 8 Solve the following questions 1 5 Question 2 1 pts What degrees of freedom would you use to construct the confidence interval for the mean score of the whole STA 13 class Type the exact degrees of freedom do not round