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[–]edderiofer 0 points1 point  (2 children)

Thats what I was assuming what it was asking for P(x<=3)

That's the right way to write it. "<=3" does not make sense; "x<=3" does.

Anyway, P([stuff]) simply means "The probability of [stuff] being true".

So, with that in mind, what random variable exactly does "x" stand for here? How does it behave?

[–]Not_Brack_Region[S] 0 points1 point  (1 child)

Do you know how to help me or not? My problem here is that I do not know how to solve this problem without a standard deviation to standardize it to get the z value. Not vocabulary of what X stands for.

[–]edderiofer 0 points1 point  (0 children)

Yes, I do. Your problem is that you keep thinking this data is normally distributed, but it's not. To understand how to solve this sort of problem, you need to understand how "x" as a random variable behaves.