Scores on a certain test follow the normal curve with an average of 1350 and a standard deviation of 120. What percentage of test takers score below 1230? (Use the empirical rule.) 16%, 1230 is one ...

The Central Limit Theorem occasionally results in extremely slow convergence to the Normal distribution, making the corresponding approximation virtually useless (a typical example being the sample ...

The normal approximation to the binomial test with and without a continuity correction is evaluated in terms of control of Type I errors and power. The normal approximations are evaluated as robust ...

Pharmacometric models using lognormal distributions have become commonplace in pharmacokinetic-pharmacodynamic investigations. The extent to which it can be interpreted by traditional description of ...

dxxx(x,) returns the density or the value on the y-axis of a probability distribution for a discrete value of x pxxx(q,) returns the cumulative density function (CDF) or the area under the curve to ...

Where \(X\) is a normally distributed random variable with mean \(\mu\) and standard deviation \(\sigma\). The peak of the curve occurs at \(x=\mu\), and the spread ...