Question
A coffee vending machine adds brewed coffee and then hot water to make a cup of coffee.Let X = the amount of coffee added and
A coffee vending machine adds brewed coffee and then hot water to make a cup of coffee.Let X = the amount of coffee added and Y = amount of water added, assume the following
X~N(46,3) (ie E(X) = 46 and Var(X) = 3)
Y~N(92,8)
Cov(X,Y) = 0.5
What is the variance in the amount of liquid that ends up in the cup, ie Var(X+Y)?
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Elementary Algebra
Authors: Jerome E Kaufmann, Rosemary Karr, Karen L Schwitters, Marilyn Massey, R David Gustafson
10th Edition
1305161769, 9781305161764
