A company wants to test the hypothesis that the time its trucks take to drive from city A to city B exceeds 13 minutes. The standard deviation of the data is known to be 12 minutes. The travel time distribution is assumed normal. A sample mean from 45 data points showed that the average travel time is 14.45 minutes. What is the conclusion of the test from this sample data set?
A company wants to test the hypothesis that the time its trucks take to drive from city A to city B exceeds 13 minutes. The standard deviation of the data is known to be 12 minutes. The travel time distribution is assumed normal. A sample mean from 45 data points showed that the average travel time is 14.45 minutes. What is the conclusion of the test from this sample data set?
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 13PPS
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Transcribed Image Text:A company wants to test the hypothesis that the time its trucks take to drive
from city A to city B exceeds 13 minutes. The standard deviation of the data
is known to be 12 minutes. The travel time distribution is assumed normal. A
sample mean from 45 data points showed that the average travel time is
14.45 minutes. What is the conclusion of the test from this sample data set?
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