The number of magazine subscriptions per house hold is represented by the following probability distribution.
Magazine subscriptions per house hold - 0, 1,2,3,4
Probability - .48, .35, .08, .05, .04
a) Calculate the mean number of Magazine subscriptions per house hold.
b) Find the standard deviation
A construction company has bid on two contracts. The probability of winning contract A is.3. If the company wins contract A, the probability of winning contract B is .4. If the company loses contract A, the probability winning contract B decrease to .2. Find the probability of the following events.
a) Winning both contracts
b) Winning exactly one contract
c) Winning at least one contract
political scientist has assigned the following probabilities:
P (Adams wins) =.42
P (Brown wins) = .09
P (Collins wins) = .27
P (Dalton wins) = .27
Determine the probabilities of the following events.