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Chapter 12: Q. 69 (page 723)

The maximum discount value of the Entertainment® card for the “Fine Dining” section, Edition ten, for various pages is given in Table 12.21.

a. Decide which variable should be the independent variable and which should be the dependent variable.

b. Draw a scatter plot of the ordered pairs.

c. Calculate the least squares line. Put the equation in the form of: \(\hat{y}=a+bx\)

Short Answer

Expert verified

Part a. Independent variable – page number

Dependent variable – maximum discount value

Part b.

Part c. \(\hat{y}=17.21-0.014x\)

Step by step solution

01

Part a. Step 1. Given information

Given,

02

Part a. Step 2. Explanation

Page number will be the independent variable and maximum discount value will be the dependent variable.

03

Part b. Step 1. Explanation

Graph,

04

Part c. Step 1. Explanation

\(\hat{y}=17.21-0.014x\)

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Most popular questions from this chapter

Use the following information to answer the next five exercises. A random sample of ten professional athletes produced the following data where xis the number of endorsements the player has and yis the amount of money made (in millions of dollars).

x
y
x
y
0
2
5
12
3
8
4
9
2
7
3
9
1
3
0
3
5
13
4
10

What does an rvalue of zero mean?

59. The Gross Domestic Product Purchasing Power Parity is an indication of a country's currency value compared to another country. Table 12.16 shows the GDPPPP of Cuba as compared to US dollars. Construct a scatter plot of the data.

Year
Cuba's PPP
Year
Cuba's PPP
1999
1,700
2006
4,000
2000
1,700
2007
11,000
2002
2,300
2008
9,500
2003
2,900
2009
9,700
2004
3,000
2010
9,900
2005
3,500

What would you predict the sales to be on day 60?

Does the line seem to fit the data? Why or why not?

Is the following an example of a linear equation? Why or why not?
See all solutions

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