(1) The data file P08_49.xlsx contains data of 400 customer's orders from a company ElectMart that sells electronic appliances by mail order. a. Calculate the 95% confidence interval for the mean total cost of all customer orders with a clear interpretation of the confidence interval. (1) b. Calculate the 95% confidence interval for the proportion of all customers shoes order is for more than $100 with clear interpretation of the confidence interval. (1) (2) The data file P1C_49.xlsx contains the amount of money spent on advertising a product and the number of units sold for several months. Assume that the only factor influencing monthly sales is advertising. a. Generate a linear line of the form Y = a + bx that fits with the data. b. How would you interpret the line obtained above. (1) (1) c. Using the obtained equation, predict the sales during a month in which $60,000 is spent on advertising. (1)
(1) The data file P08_49.xlsx contains data of 400 customer's orders from a company ElectMart that sells electronic appliances by mail order. a. Calculate the 95% confidence interval for the mean total cost of all customer orders with a clear interpretation of the confidence interval. (1) b. Calculate the 95% confidence interval for the proportion of all customers shoes order is for more than $100 with clear interpretation of the confidence interval. (1) (2) The data file P1C_49.xlsx contains the amount of money spent on advertising a product and the number of units sold for several months. Assume that the only factor influencing monthly sales is advertising. a. Generate a linear line of the form Y = a + bx that fits with the data. b. How would you interpret the line obtained above. (1) (1) c. Using the obtained equation, predict the sales during a month in which $60,000 is spent on advertising. (1)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
None
Transcribed Image Text:(1) The data file P08_49.xlsx contains data of 400 customer's orders from a company
ElectMart that sells electronic appliances by mail order.
a. Calculate the 95% confidence interval for the mean total cost of all customer orders with
a clear interpretation of the confidence interval.
(1)
b. Calculate the 95% confidence interval for the proportion of all customers shoes order is
for more than $100 with clear interpretation of the confidence interval.
(1)
(2) The data file P1C_49.xlsx contains the amount of money spent on advertising a product
and the number of units sold for several months. Assume that the only factor influencing
monthly sales is advertising.
a. Generate a linear line of the form Y = a + bx that fits with the data.
b. How would you interpret the line obtained above.
(1)
(1)
c. Using the obtained equation, predict the sales during a month in which $60,000 is spent
on advertising.
(1)
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
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
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman