Solve the problem.
-The sample size is n = 7, $\sigma$ is not known, and the original population is normally distributed.
A) Yes
B) No

Question

Quizplus · Accepted Answer

Since the population is normally distributed and the sample size is less than 30, we can use t-distribution with degrees of freedom (df) = n-1. We can use a t-interval to estimate the population mean with a certain level of confidence. Alternatively, we can use a t-test for the population mean to test a hypothesis with a certain level of significance.

Solve the Problem σ\sigmaσ Is Not Known, and the Original Population Is Normally Distributed

Solve the Problem $\sigma$ Is Not Known, and the Original Population Is Normally Distributed