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Let X denote the time in hours needed to locate and correct a problem in the software that governs the timing of traffic lights in the downtown area of a large city. Assume that X is normally distributedwith mean 10 hours and variance 9. Find the probability that the next problem will require at most 15 hours to find and correct. а. b. The fastest 5% of repairs take at most how many hours to complete?

Let X denote the time in hours needed to locate and correct a problem in the software that governs the timing of traffic lights in the downtown area of a large city. Assume that X is normally distributedwith mean 10 hours and variance 9. Find the probability that the next problem will require at most 15 hours to find and correct. а. b. The fastest 5% of repairs take at most how many hours to complete?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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1. Let X denote the time in hours needed to locate and correct a problem in the software that governs the timing of traffic lights in the downtown area of a large city. Assume that X is normally distributed with mean 10 hours and variance 9. Find the probability that the next problem will require at most 15 hours to find and correct. b. The fastest 5% of repairs take at most how many hours to complete? a.
Transcribed Image Text:1. Let X denote the time in hours needed to locate and correct a problem in the software that governs the timing of traffic lights in the downtown area of a large city. Assume that X is normally distributed with mean 10 hours and variance 9. Find the probability that the next problem will require at most 15 hours to find and correct. b. The fastest 5% of repairs take at most how many hours to complete? a.
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