IEE380Summer09Q1

# IEE380Summer09Q1 - Name: _____________________________ Quiz...

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IEE 380 Summer 2009 Name: _____________________________ Quiz #1 3-17, 3-18 X is the number of bars of service on your cell phone. The probability mass function of X is as follows: p(x) = .05 x = 0 = .15 x = 1 = .15 x = 2 = .25 x = 3 = .20 x = 4 = .20 x = 5 What is the probability that you have at least 3 bars of service? P(X > 3) = .25 + .20 + .20 = .65 What is the probability that you have fewer than 2 bars of service? P(X < 2) = .05 + .15 = .20 IEE 380 Summer 2009 Name: _____________________________ Quiz #1 Y is the number of bars of service on your cell phone. The probability mass function of Y is as follows: p(y) = .25 y = 0 = .20 y = 1 = .15 y = 2 = .30 y = 3 = .10 y = 4 What is the probability that you have fewer than three bars of service? P(X < 3) = .25+.20+.15 = .60 What is the probability that you have at least two bars of service? P(X > 2) = .15+.30+.10 = .55

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IEE 380 Summer 2009
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Unformatted text preview: Name: _____________________________ Quiz #1 X is the number of patients per month that get an infection. The probability mass function of X is as follows: p(x) = .65 x = 0 = .15 x = 1 = .12 x = 2 = .08 x = 3 What is the probability that at least one patient gets an infection? P(X > 1) = .15 + .12 + .08 = .35 What is the probability that fewer than 2 patients get an infection? P(X < 2) = .65+ .15 = .80 IEE 380 Summer 2009 Name: _____________________________ Quiz #1 Y is the number of patients per month that get an infection. The probability mass function of Y is as follows: p(y) = .45 y = 0 = .25 y = 1 = .23 y = 2 = .07 y = 3 What is the probability that at least two patients get an infection? P(Y > 2) = .23 + .07 = .30 What is the probability that fewer than one patient gets an infection? P(Y < 1) = .45...
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## This note was uploaded on 12/11/2009 for the course CSE IEE taught by Professor Chattin during the Summer '09 term at ASU.

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IEE380Summer09Q1 - Name: _____________________________ Quiz...

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