is the probability that the true mean lies within a certain interval and is often expressed as a percentage

The probability that a result is outside the confidence interval is often called the

s postulates that two or more observed quantities are the same.

which assumes that the numerical quantities being compared are, in fact, the same

it does not matter whether the mean is larger or smaller than the known value

the direction of the difference matters

refers to a set of procedures in which more than two populations or data from more than two experimental treatments can be compared.

are sums of squares divided by degrees of freedom.

computes the t statistic and the probability of t assuming that H0 is true. If pis small compared to the significance level a

used to compare more than two means and to determine whether any differences are real or the result of random errors.

is used to determine whether a result considered to be an outlier should be retained or rejected