Which of the following demonstrates that events A and B are disjoint? O P(A) = 0.6, P(B) = 0.5 and P(A or B) = 0.75 O P(A) = 0.4, P(B) = 0.4 and P(A and B) = 0.16 O P(A) = 0.3, P(B) = 0.15 and P(A or B) = 0.35 O P(A) = 0.3, P(B) = 0.25 and P(A or B) = 0.55 Question 7 The cholesterol levels of young women aged 20 to 34 are normally distributed with a mean of 185 milligrams per deciliter (mg/dl) and a standard deviation of 30 mg/dl. Roughly 95% of cholesterol levels are between 155 and 215 95 and 275 125 and 245