Posted by sam on Friday, November 4, 2011 at 10:30am.
A rocket fuel is to contain percent X of a particular chemical. The specification limits for X are 30 to 35%. The manufacturer will make a profit Q(x) on fuel per gallon as follows.
Q(x)=
10 cents if 30<=x<=35
5 cents if 35<x<40 or 25<x<30
10 cents otherwise
Assuming X has a normal distribution with mean 33 and standard deviation 3, calculate expected profit, E(Q(X)).
I don't understand how to determine E(Q(X)) without a pdf.

statistics  Anonymous, Friday, April 20, 2012 at 2:00pm
n=100, p=1/4
Answer This Question
Related Questions
 Physics  The solid fuel of a 300.kg rocket travelling at 1.64x104 km/h is ...
 Microeconomics  Last year Delta airlines purchased and stored 1 million gallons...
 Chem  Aviation fuel is significantly more expensive per gallon than diesel fuel...
 Physics  A model rocket is launched vertically upward from the ground. After 4....
 Stats  A prototype from a hybrid vehicle manufacturer claims to get 50 miles ...
 Algebra  The fuel efficiency for a certain midsize car is given by E(v) = &#...
 algera  The fuel efficiency for a certain midsize car is given by E(v) = −...
 algebra 1  Harold's car has a fuel tank with 12 gallons of fuel in it. The fuel...
 Algebra  The fuel efficiency for a certain midsize car is given by E(v) = &#...
 math  Which car is the cheapest to run?Explain why. Bill's car: average fuel ...
More Related Questions