Lemma
MediumNormal distribution
OpenStax, Introductory Statistics 2e §6.2 Using the Normal Distribution · Exercise 22 · Statistics · Normal distribution

Using the Normal Distribution · Exercise 22

The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of five minutes and a standard deviation of two minutes.

Seventy percent of the time, it takes more than how many minutes to find a parking space?

(a) 1.24
(b) 2.41
(c) 3.95
(d) 6.05

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OpenStax, Introductory Statistics 2e · §6.2 Using the Normal Distribution · Exercise 22

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