Homework Help is Here – Start Your Trial Now!
Math
Statistics
(d) Would it be unusual if the sample mean were less than $7700? (e) Do you think it would be unusual for an individual to pay a tax of less than $7700? Explain.

(d) Would it be unusual if the sample mean were less than $7700? (e) Do you think it would be unusual for an individual to pay a tax of less than $7700? Explain.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question
Only need help with D and E
5)The Internal Revenue Service reports that the mean federal income tax paid in the year was $8040. Assume that the standard deviation is $4800. The IRS plans to draw a sample of 1000 tax returns to study the effect of a new tax law. (a) What is the probability that the sample mean tax is less than $8200 ? (b) What is the probability that the sample mean tax is between $7400 and $7900 ? (c) Find the 20 th percentile of the sample mean.
Transcribed Image Text:5)The Internal Revenue Service reports that the mean federal income tax paid in the year was $8040. Assume that the standard deviation is $4800. The IRS plans to draw a sample of 1000 tax returns to study the effect of a new tax law. (a) What is the probability that the sample mean tax is less than $8200 ? (b) What is the probability that the sample mean tax is between $7400 and $7900 ? (c) Find the 20 th percentile of the sample mean.
(d) Would it be unusual if the sample mean were less than $7700? (e) Do you think it would be unusual for an individual to pay a tax of less than $7700? Explain. 8
Transcribed Image Text:(d) Would it be unusual if the sample mean were less than $7700? (e) Do you think it would be unusual for an individual to pay a tax of less than $7700? Explain. 8
Expert Solution
steps

Step by step

Solved in 3 steps with 4 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS