Statistic

15. Suppose you roll a die 60 times and get 12 ones, 9 twos, 10 threes, 6 fours, 11 fives, and 12 sixes. Do you have evidence that die is unfair? Use a 5% level of significance. a. Hypothesis? b. Degrees of freedom? c. Expected number? d. Test statistic? e. Approximate p-value. f. Decision? 16. The following test scores were recorded from a group of 8 students. Exam 1 72 79 69 76 56 60 64 78 78 Exam 2 78 74 67 77 60 60 65 70 |71 a. Compute the equation of regression line. b. Predict the grade on the second exam if the grade on the first test was 81, using the regression equation above