What distribution does that question tell you to use?
If it's the normal distribution, then you need no skill to calculate a probability beyond what you already used to solve the question in your other thread.
Hey again guys.
The previous question i posted in the forum was already solved, but i have another question.
how do i solve:
What is the probability that a randomly selected ping pong ball will have a diameter between 2.28 and 2.30 inches?
Given: mean 2.3 inches and standard deviation of 0,04 inch.
Thanks.
I assume diameter is a normal random variable.
Convert D1 = 2.28 and D2 = 2.30 into Z-values z1 and z2 using . Then calculate Pr(z1 < Z < z2) in the usual way (you were shown this in your other thread http://www.mathhelpforum.com/math-he...ns-176862.html).
If you need more help, show all your working and say where you get stuck.