Events a and b are disjoint find p a or b when p a and p b

set of observations x1, x2,...,xn, with mean ¯x, then: Xn i=1 (xi x¯) > 0. ii. For two independent events A and B such that P(A) > 0 and P(B) > 0, then: P(A [ B) < P(A) + P(B). iii. For a random variable X, E(X2) can be less than (E(X))2. iv. Rejecting a true null hypothesis is known as the power of a test. v. A 4-by-2 contingency table which results in a 2 test statistic value of 6.724 is statistically significant at the 5% significance level.

t, • A and B are mutually exclusive, • P(AUC) = 2/3, P(BUC) = 3/4, P(AUBUC) = 11/2 Find P(A), P(B) and P(C).

, • A and B are mutually exclusive, • P(A∪C)= 2,P(B∪C)= 3,P(A∪B∪C)= 11 3 4 12 Find P(A), P(B) and P(C).