The average amount of money spent for lunch per person in the college cafeteria is 55.74 and the standard deviation is $2.52. Suppose that 45 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal places where possible. a. What is the distribution of X? X-N b. What is the distribution of ? - N c. For a single randomly selected lunch patron, find the probability that this patron's lunch cost is between $5.7665 and $6.3244.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
The average amount of money spent for lunch per person in the college cafeteria is $5.74, and the standard deviation is $2.52. Suppose that 45 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal places where possible.

a. What is the distribution of \( X \)? \( X \sim N(\, \, \, ) \)

b. What is the distribution of \( \bar{x} \)? \( \bar{x} \sim N(\, \, \, ) \)

c. For a single randomly selected lunch patron, find the probability that this patron’s lunch cost is between $5.7665 and $6.3244.

d. For the group of 45 patrons, find the probability that the average lunch cost is between $5.7665 and $6.3244.

e. For part d), is the assumption that the distribution is normal necessary? \( \circ \) Yes \( \circ \) No
Transcribed Image Text:The average amount of money spent for lunch per person in the college cafeteria is $5.74, and the standard deviation is $2.52. Suppose that 45 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal places where possible. a. What is the distribution of \( X \)? \( X \sim N(\, \, \, ) \) b. What is the distribution of \( \bar{x} \)? \( \bar{x} \sim N(\, \, \, ) \) c. For a single randomly selected lunch patron, find the probability that this patron’s lunch cost is between $5.7665 and $6.3244. d. For the group of 45 patrons, find the probability that the average lunch cost is between $5.7665 and $6.3244. e. For part d), is the assumption that the distribution is normal necessary? \( \circ \) Yes \( \circ \) No
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 1 images

Blurred answer
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question

Need part D

Solution
Bartleby Expert
SEE SOLUTION
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