Due: Mar 15, 2021. 23:59 pm.
HW 5
Textbook 4.7.4 (7ed 4.7.3), 4.7.8, 5.1.1, 5.1.2(a, b)
1. Let the result of a random experiment be classified as one of the mutually exclusive and exhaustive ways A1, A2, A3 and also as one of the mutually exclusive and exhaustive ways B1, B2, B3, B4. Two hundred independent trials of the experiment result in the following data:
B1 B2 B3 B4 10 21 15 6 11 27 21 13
6 19 27 24
Test, at the 0.05 significance level, the hypothesis of independence of the A attribute and the B attribute, namely, H0 : P (Ai ¡ÉBj) = P (Ai)P (Bj), i = 1,2,3 and j = 1,2,3,4, against the alternative of depen- dence.
A1 A2 A3
1