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
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Introductory Statistics 2e · §6.2 Using the Normal Distribution · Exercise 22
No hints for this one.
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