Probability and proportion from standard deviation and mean
107957
The lifetimes of a colour TV picture tube
149781
Probability of Independent Normal Random Variables
117417
Prove that the standard deviation is less than half the range
147323
calculating mean of a random variable raised to a power
21649
P.d.f of the absolute value of a normally distributed variable
121307
Expectation of random variables ratio
128746
Probability of mean of random sample being in a certain range
123822
PDF and CDF of sum of random variables with different distributions
48558
How can I calculate the probability for multiple trials with different probabilities?
124936
Help with a Probability Proof
90411
$P(X_1 < \min(X_i,\ldots, X_n))$ across different normal random variables
107144
Normal distribution probability calculation
153167
How does the expected value relate to mean, median, etc. in a non-normal distribution?
44687
Expected Value and Random variables
127754
Interpretation of a probability problem: expected value.
154617
Mean, Average and Expectation
135907
Area within a given number of standard deviations from given mean