Lemma
EasySampling distributions
OpenStax, Introductory Statistics 2e §7.2 The Central Limit Theorem for Sums · Try It 1 · Statistics · Sampling distributions

The Central Limit Theorem for Sums · Try It 1

An unknown distribution has a mean of 45 and a standard deviation of eight. A sample size of 50 is drawn randomly from the population. Find the probability that the sum of the 50 values is more than 2,400.

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

~5 minWritten answer · compare with the solution

OpenStax, Introductory Statistics 2e · §7.2 The Central Limit Theorem for Sums · Try It 1

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.