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Statistics

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

2.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.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9412316

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