1. The marks scored by some students of Class 11A and Class 11B where they appeared same
time. (The given data is a sample data)
A. Find the average score of Class 11A and Class 11B.
B. Is the variance of Class 11A is higher than the variance of Class 11B? Justify your answer with
proof.
C. Calculate rank correlation coefficient and comment on your result.
D. Test at 10% LOS whether the sample scores of Classes 11A has come from his normal
population with the mean score of 30?
2.Fit a binomial distribution for the following data. Also test the goodness of fit at 50% level of
significance.
R code:
Out put: