Los Angeles workers have an average commute of 27 minutes. Suppose the LA commute time ts normally distributed with a standard deviation of 15 minutes. Let X represent the commute time for a randomly selected LA worker. Round alt answers to 4 decimal places where possible. a. What is the distribution of X? X N b. Find the probabllity that a randomty selected LA worker has a commute that is longer than 28 minutes minutes Find the 70th percentile for the commute time of LA workers.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Plzz explain a, b and c
Los Angeles workers have an average commute of 27 minutes. Suppose the LA commute time is normatty
distributed with a standard deviation of 15 minutes. Let X represent the commute time for a randomly
selected LA waorker. Round all answers to 4 decimal places where possible.
a. What is the distribution of X? X N
b. Find the probability that a randomly selected LA worker has a commute that is tonger than 28 minutes.
C. Find the 70th percentile for the commute time of LA Workers.
minutes
Transcribed Image Text:Los Angeles workers have an average commute of 27 minutes. Suppose the LA commute time is normatty distributed with a standard deviation of 15 minutes. Let X represent the commute time for a randomly selected LA waorker. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X N b. Find the probability that a randomly selected LA worker has a commute that is tonger than 28 minutes. C. Find the 70th percentile for the commute time of LA Workers. minutes
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