MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
Bartleby Related Questions Icon

Related questions

Topic Video
Question
100%
You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the
population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals.
A random sample of 35 home theater systems has a mean price of $145.00. Assume the population standard deviation is $18.10.
Construct a 90% confidence interval for the population mean.
The 90% confidence interval is ( D.
(Round to two decimal places as needed.)
S...
el R...
1o-Insta...
PDF
DRA
2021
Deputy
Incidents.pdf
Enter your answer in the edit fields and then click Check Answer.
2 parts
remaining
Clear All
Check Answer
Riley LAMA
expand button
Transcribed Image Text:You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals. A random sample of 35 home theater systems has a mean price of $145.00. Assume the population standard deviation is $18.10. Construct a 90% confidence interval for the population mean. The 90% confidence interval is ( D. (Round to two decimal places as needed.) S... el R... 1o-Insta... PDF DRA 2021 Deputy Incidents.pdf Enter your answer in the edit fields and then click Check Answer. 2 parts remaining Clear All Check Answer Riley LAMA
Expert Solution
Check Mark
Step 1 Introduction:

Confidence Interval: In statistics, we can say a range of values of the specified population parameter that is lies within it with some confidence is known as Confidence Interval. They can take any number of probability limits, with the most common being a 90%, 95% or 99% confidence level. Confidence level is denoted by 1 - α. The probability that the confidence interval actually contains the population parameter. 

The most commonly used confidence levels are 90%, 95% and 99%.

If you have set of data is under 30 (n < 30), you want to use t-distribution instead of the normal distribution(z-score) to construct your confidence interval and Vice-versa.

Then the formula for constructing the confidence interval at 90% confidence level is given by

Statistics homework question answer, step 1, image 1

where x-bar is sample mean

          s is sample standard deviation

          n is sample size and 

          zα/2 is the Critical value.

 

Knowledge Booster
Background pattern image
Statistics
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Text book image
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Text book image
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Text book image
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
Text book image
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Text book image
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman