Lemma
MediumHypothesis testing
OpenStax, Introductory Statistics 2e §9.3 Probability Distribution Needed for Hypothesis Testing · Exercise 4 · Statistics · Hypothesis testing

Probability Distribution Needed for Hypothesis Testing · Exercise 4

A population mean is 13. The sample mean is 12.8, and the sample standard deviation is two. The sample size is 20. What distribution should you use to perform a hypothesis test? Assume the underlying population is normal.

Its source prints no answer for this problem, so there's nothing to check against.

~8 minWritten answer · compare with the solution

OpenStax, Introductory Statistics 2e · §9.3 Probability Distribution Needed for Hypothesis Testing · Exercise 4

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your working

Check your full solution

Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.