one-sample t-test

The one sample \[t\]-test is used to test whether the mean from a sample is significantly different from another hypothesized mean such as a known population mean. When the population parameter is known, we can assess how similar our sample statistic is to the population parameter.

A second use of a one sample t-test is to see if a sample mean is similar or significantly different from a hypothesized value for the mean, whether or not that value is known to be true in a population. In this version, a hypothesized or hoped for value is used in place of a known population mean.