Lemma
MediumNormal distribution
OpenStax, Introductory Statistics 2e §6.2 Using the Normal Distribution · Exercise 26 · Statistics · Normal distribution

Using the Normal Distribution · Exercise 26

Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed with a mean of 250 feet and a standard deviation of 50 feet.

(a) If X = distance in feet for a fly ball, then X ~ _____(_____,_____)
(b) If one fly ball is randomly chosen from this distribution, what is the probability that this ball traveled fewer than 220 feet? Sketch the graph. Scale the horizontal axis X. Shade the region corresponding to the probability. Find the probability.
(c) Find the 80^th percentile of the distribution of fly balls. Sketch the graph, and write the probability statement.

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 · §6.2 Using the Normal Distribution · Exercise 26

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.