Lemma
EasyContinuous distributions
OpenStax, Introductory Statistics 2e §5.2 The Uniform Distribution · Try It 5 · Probability · Continuous distributions

The Uniform Distribution · Try It 5

The amount of time a service technician needs to change the oil in a car is uniformly distributed between 11 and 21 minutes. Let X = the time needed to change the oil on a car.

(a) Write the random variable X in words. X = __________________.
(b) Write the distribution.
(c) Graph the distribution.
(d) Find P (x > 19).
(e) Find the 50^th percentile.

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

~5 minWritten answer · check your work with Lemma

OpenStax, Introductory Statistics 2e · §5.2 The Uniform Distribution · Try It 5

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your working

Check your full solution

Attach photos of your pages (up to 3) or one PDF — or check what you typed above. Lemma reads the work and verifies the reasoning, not just the answer.

Your first check today doesn't need an account.

Your photos and PDFs are read once and not stored — only the transcription is kept.