Lemma
MediumNormal distribution
OpenStax, Introductory Statistics 2e §6.1 The Standard Normal Distribution · Exercise 33 · Statistics · Normal distribution

The Standard Normal Distribution · Exercise 33

About what percent of x values lie between the second and third standard deviations (both sides)?

~8 minWritten answer · compare with the solution

OpenStax, Introductory Statistics 2e · §6.1 The Standard Normal Distribution · Exercise 33

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.