Los Angeles workers have an average commute of 28 minutes. Suppose the LA commute time is normally distributed with a standard deviation of 15 minutes. Let X represent the commute time for a randomly selected LA worker. a. What is the distribution of X? X - N( b. Find the probability that a randomly selected LA worker has a commute that is longer than 30 minutes. Round to 4 decimal places. c. Find the 90th percentile for the commute time of LA workers. Round to 2 decimal places. minutes
Los Angeles workers have an average commute of 28 minutes. Suppose the LA commute time is normally distributed with a standard deviation of 15 minutes. Let X represent the commute time for a randomly selected LA worker. a. What is the distribution of X? X - N( b. Find the probability that a randomly selected LA worker has a commute that is longer than 30 minutes. Round to 4 decimal places. c. Find the 90th percentile for the commute time of LA workers. Round to 2 decimal places. minutes
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 11PPS
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![Los Angeles workers have an average commute of 28 minutes. Suppose the LA commute time is normally
distributed with a standard deviation of 15 minutes. Let X represent the commute time for a randomly
selected LA worker.
a. What is the distribution of X? X - N(
b. Find the probability that a randomly selected LA worker has a commute that is longer than 30 minutes.
Round to 4 decimal places.
c. Find the 90th percentile for the commute time of LA workers. Round to 2 decimal places.
minutes](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0fe4fd1f-2fa0-4404-8ffe-f852e50fa0fd%2F3cad4663-3482-4dd5-b012-aec81bae7a92%2Fqglxvhp_processed.png&w=3840&q=75)
Transcribed Image Text:Los Angeles workers have an average commute of 28 minutes. Suppose the LA commute time is normally
distributed with a standard deviation of 15 minutes. Let X represent the commute time for a randomly
selected LA worker.
a. What is the distribution of X? X - N(
b. Find the probability that a randomly selected LA worker has a commute that is longer than 30 minutes.
Round to 4 decimal places.
c. Find the 90th percentile for the commute time of LA workers. Round to 2 decimal places.
minutes
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