In conducting a hypothesis test about the population mean $\mu$ ,if the population is truly or approximately normally distributed with $\text { ? }$ unknown,then the test statistic will be z,corresponding to the normal distribution.

Question

Quizplus · Accepted Answer

If the population standard deviation ($\sigma$) is not known, then the test statistic will follow a t-distribution instead of a normal distribution. The degrees of freedom for the t-distribution will be n-1, where n is the sample size.

In Conducting a Hypothesis Test About the Population Mean μ\muμ ,If the Population Is Truly or Approximately Normally Distributed With ,If

In Conducting a Hypothesis Test About the Population Mean $\mu$ ,If the Population Is Truly or Approximately Normally Distributed With ,If