I am no old school member, but I have enjoyed the forum until now.
Before this thread is deleted, I will tell you why.
Evo, an op, has closed a thread recently without understand it or even reading it. It's not the first time she's done this. The last time she did it to me, it was re...
The subject seems inexact to me. For example:
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In each question below is given a statement followed by two conclusions numbered I and II. You have to assume everything in the statement to be true, then consider the two conclusions together and decide which of them logically follows beyond...
I understand that the electromagnetic waves inside a microwave can induce a current (terminology?) on a metal object within it. What I don't understand is why, when my fork touched the interior casing of the microwave, it made a lot of sparks and an arc-welder like black mark on the wall. If...
Here's an example of what I'm talking about, from http://www.itl.nist.gov/div898/handbook/eda/section3/eda3668.htm.
The probability in the top left graph actually goes above 1 for some values of X < 1. How is this even possible?
Thank you
Hi. I notice that some values of X on the exponential distribution PDF have a value of around 1. I understand the integral ends up being one, since those values of X are less than 1. But P(X) at those points still gets to 1, or thereabouts. How does that make sense, that the probability of a...
Thank you. Additionally, is it true that the standard deviation for an exponential distribution is the same as the mean? Does this imply that the first standard deviation for an exponential distribution is, on either side of the mean 'u', 0 - u, and u - 2u?
Thank you again
What is the significance of the standard deviation (equal to the mean) in an exponential distribution? For example, as compared to the standard deviation in the normal distribution, which conforms to the '68-95-99.7' rule?
thanks