If A and B are mutually exclusive events with P(A) = 0.70, then P(B) can be any value between 0 and 1. can be any value between 0 and 0.70. cannot be larger than 0.30.
None of the above statements are true.

If A and B are independent events with P(A) = 0.20 and P(B) = 0.60, then P(A|B) is
0.2000

In the notation below, X is the random variable, c is a constant, and V refers to the variance. Which of the following laws of variance is not correct?
V(c) = 0
V(X + c) = V(X)
V(X + c) = V(X) + c
V(cX) = c2 V(X)

Which of the following statements is always correct?
P(A and B) = P(A) * P(B)
P(A or B) = P(A) + P(B)
P(A or B) = P(A) + P(B) + P(A and B)
P[pic]= 1- P(A)

An experiment consists of tossing an unbiased coin three times. Drawing a probability tree for this experiment will show that the number of simple events in this experiment is
8

Use the following information to answer questions 6 and 7: The weights of newborn children in the United States vary according to a normal distribution with mean 7.5 pounds and standard deviation 1.25 pounds. The government classifies a newborn as having low birth weight if the weight is less than 5.5 pounds.

What proportion of babies weigh less than 5.5 pounds at birth?
0.0548

If the government wanted to change the value 5.5 pounds to a weight where only 2% of newborns weigh less than the new value, what weight should they use?
4.9375 pounds

If you are given a table of joint probabilities of two events, any probability computed by adding across rows or down columns is also called marginal probability joint probability conditional probability
Bayes’ theorem

The effect of increasing the standard deviation of a normally distributed random variable is that the distribution becomes narrower and more peaked. flatter and wider.

If the random variable X follows a Uniform distribution with