February 21, 2017

Homework Help: probability and statistics.

Posted by penny lane on Tuesday, May 17, 2011 at 9:52pm.

I am preparing for a chapter test in my prob/stat class and since my teacher no longer cares about our class and the textbook is as confusing as a foriegn languaga, i am in need of help. i am trying to review an old quiz ao here is one of the questions.

the probability that a costomer selects 1,2,3,4 or 5 items at a convenience store are 3.02,.012,.023,.018 and.015, respectively.

find P(X>3.5)
find P(X<5)

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