2. The president of a university would like to know the average commuting time of the students when travelling to school. To do this, he asked a researcher to gather data from 100 students. The sample mean was found out to be 34.05 minutes and the standard deviation to be 9.50 minutes. At a confidence level of 90 percent, what is the confidence interval that can estimate the population mean?
2. The president of a university would like to know the average commuting time of the students when travelling to school. To do this, he asked a researcher to gather data from 100 students. The sample mean was found out to be 34.05 minutes and the standard deviation to be 9.50 minutes. At a confidence level of 90 percent, what is the confidence interval that can estimate the population mean?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
![2. The president of a university would like to know
the average commuting time of the students when
travelling to school. To do this, he asked a
researcher to gather data from 100 students. The
sample mean was found out to be 34.05 minutes
and the standard deviation to be 9.50 minutes. At a
confidence level of 90 percent, what is the
confidence interval that
can
estimate the
population mean?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7f9b1c5b-8172-43a3-b061-900b267ae048%2F856fde9d-c8a9-4a89-af06-8427f1d13c3b%2F8karuc_processed.png&w=3840&q=75)
Transcribed Image Text:2. The president of a university would like to know
the average commuting time of the students when
travelling to school. To do this, he asked a
researcher to gather data from 100 students. The
sample mean was found out to be 34.05 minutes
and the standard deviation to be 9.50 minutes. At a
confidence level of 90 percent, what is the
confidence interval that
can
estimate the
population mean?
![1. A farmer would like to know the average mass of
his newly harvested tomatoes. To do this, he
measured the mass of 90 tomatoes and found their
mean mass to be 52 grams. It was known before the
population standard deviation is equal to 4.5 grams.
At a confidence level of 95%, determine the
confidence interval of the population mean.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7f9b1c5b-8172-43a3-b061-900b267ae048%2F856fde9d-c8a9-4a89-af06-8427f1d13c3b%2Ftm1c6o7_processed.png&w=3840&q=75)
Transcribed Image Text:1. A farmer would like to know the average mass of
his newly harvested tomatoes. To do this, he
measured the mass of 90 tomatoes and found their
mean mass to be 52 grams. It was known before the
population standard deviation is equal to 4.5 grams.
At a confidence level of 95%, determine the
confidence interval of the population mean.
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