Lemma
MediumNormal distribution
OpenStax, Introductory Statistics 2e §6.1 The Standard Normal Distribution · Exercise 4 · Statistics · Normal distribution

The Standard Normal Distribution · Exercise 4

A company manufactures rubber balls. The mean diameter of a ball is 12 cm with a standard deviation of 0.2 cm. Define the random variable X in words. X = ______________.

This exercise has fill-in blanks from its source book and no answer key.

~8 minWritten answer · compare with the solution

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