# jay

 May 1 comment Gamma and exponential distributionThanks!! Thanks for the fixing the text, and thanks for the help... Awesome! May 1 asked Gamma and exponential distribution May 1 comment Difficult Expectation problem100*EX + 50 = 100*90 + 50 = \$9050 for the average cost, and for the deviation 100*5 = \$500 ... sorry for the confusion, I'm just not understand exactly what the problem is asking based on the information given, maybe it's more a semantics issue. Thanks everyone!!! May 1 comment Difficult Expectation problemI'm actually lost on this problem.... May 1 comment Difficult Expectation problemI know how to find the mean and standard deviation, but what value am I using for x ? May 1 comment Difficult Expectation problemNot sure, I will see if I can figure it out . May 1 awarded Commentator May 1 comment Difficult Expectation problemThe standard deviation = 5, and the mean is 90. I think X is just a probability, not sure how to calculate, that is what I am stuck on! May 1 asked Difficult Expectation problem Apr 30 comment probability dice experimentwow. Awesome, thanks! Apr 30 comment probability dice experimentThanks so much!! Apr 30 comment probability dice experimentRight, I'm seconding guess now because f(x) does not equal 1. Sorry for the confusion Apr 30 comment probability dice experimentThanks, so how is EX computed for this probability function? Apr 30 comment probability dice experimentI think I got it, thanks Apr 30 comment probability dice experimentI'm seconding guessing my "obvious" insight now... Apr 30 comment probability dice experimentYea, the EX for this function and if this is indeed a geometric distribution, I have no way of telling Apr 30 comment probability dice experimentX=9, it's the 9th trial.. Sorry about that typo Apr 30 asked probability dice experiment Apr 30 comment expectation in coin draw problemGot it.. Thanks! Apr 30 awarded Student