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 Oct 3 revised Performing hypothesis test for the difference of population means: paired comparisons edited title Oct 3 revised Performing hypothesis test for the difference of population means: paired comparisons added 20 characters in body Oct 3 asked Performing hypothesis test for the difference of population means: paired comparisons Sep 30 awarded Cleanup Sep 30 comment How do we identify a probability problem as a conditional probability problem? @DilipSarwate minor math latex error Sep 30 revised Craps game probability rolled back to a previous revision Sep 30 revised Craps game probability deleted 69 characters in body Sep 30 revised Craps game probability added 133 characters in body Sep 30 comment How do we identify a probability problem as a conditional probability problem? @DilipSarwate if they had used the keyword "Given" it would've been much easier, but here it doesn't use the keyword "Given". What other clues should i look for? Sep 30 answered Craps game probability Sep 30 asked How do we identify a probability problem as a conditional probability problem? Sep 24 comment Solving an equation with three quadratic radicals in the set of real numbers 2 seems to work... Sep 24 comment Probability in flipping a coin @did the answer is accepted, when i unaccepted the answer, I added questions in the comment beneath the answer, and Jean provided answers to my questions, so i reaccepted his answer. Sep 23 comment Confusion on the meaning of confidence interval it seems quite reasonable that they would "cancel" out because sometime we'd get a sample mean higher than the true mean sometimes lower, but is there a formal explanation as to how they cancel(usually should be some proof or explanation) for this, if not "convenient", cancellation. Sep 22 revised Confusion on the meaning of confidence interval edited title Sep 22 comment Confusion on the meaning of confidence interval i see, you want to be precise. but can you explain why is the area under the curve to the left of 72.1 is less than the area under the curve to the right of 72.1 in the graph above? Sep 22 revised Confusion on the meaning of confidence interval added 2 characters in body Sep 22 comment Confusion on the meaning of confidence interval but why is the area under the curve to the left of 72.1 less than the area under the curve to the right of 72.1 in the graph above? Sep 22 comment Confusion on the meaning of confidence interval we should be able to assume the distribution is normal because of Central Limit Theorem, and in this case $n$ >30 Sep 22 revised Confusion on the meaning of confidence interval edited body