While browsing through a magazine rack at a bookstore, a statistician decides to examine the relationship between the price of a magazine and the percentage of the magazine space that contains advertisements. The data are given in the following table. Percentage 37 43 58 49 70 28 65 32 containing ads Price ($) 5.50 6.95 4.95 5.75 3.95 8.25 5.50 6.75 a. Construct a scatter diagram for these data. Does the scatter diagram exhibit a linear relationship between the percentage of a magazine's space containing ads and the price of the magazine? O Yes. O No. b. Find the estimated regression equation of price on the percentage of space containing ads. Round your answers to four decimal places. i + (

While browsing through a magazine rack at a bookstore, a statistician decides to examine the relationship between the price of a magazine and the percentage of the magazine space that contains advertisements. The data are given in the following table. Percentage 37 43 58 49 70 28 65 32 containing ads Price ($) 5.50 6.95 4.95 5.75 3.95 8.25 5.50 6.75 a. Construct a scatter diagram for these data. Does the scatter diagram exhibit a linear relationship between the percentage of a magazine's space containing ads and the price of the magazine? O Yes. O No. b. Find the estimated regression equation of price on the percentage of space containing ads. Round your answers to four decimal places. i + (

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

E.) Predict the price of a magazine with 45% of its space containing ads.

F.) Estimate the price of a magazine with 99% of its space containing ads.

Why should we have little confidence in this estimate?

While browsing through a magazine rack at a bookstore, a statistician decides to examine the relationship between the price of a
magazine and the percentage of the magazine space that contains advertisements. The data are given in the following table.
Percentage
37
43
58
49
70
28
65
32
containing ads
Price ($)
5.50
6.95
4.95
5.75
3.95
8.25
5.50
6.75
a. Construct a scatter diagram for these data. Does the scatter diagram exhibit a linear relationship between the percentage of a
magazine's space containing ads and the price of the magazine?
Yes.
No.
b. Find the estimated regression equation of price on the percentage of space containing ads.
Round your answers to four decimal places.
y =
i
+ ( i

c. Interpret the meaning of the values of a and b calculated in part b.
a is the
bis the
d. Choose the plot of the the predictive regression line on the scatter diagram of part a, and show the errors by drawing vertical
lines between the scatter points and the predictive regression line.

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