Chapter 12: Q.37 (page 718)
Perform linear regression. What is the linear equation? Round to the nearest whole number.
Short Answer
The linear equation
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Chapter 12: Q.37 (page 718)
Perform linear regression. What is the linear equation? Round to the nearest whole number.
The linear equation
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Use the following information to answer the next five exercises. A random sample of ten professional athletes produced the following data where is the number of endorsements the player has and is 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 |
.When and,are the data significant? Explain
For each of the following situations, state the independent variable and the dependent variable.
a. A study is done to determine if elderly drivers are involved in more motor vehicle fatalities than other drivers. The number of fatalities per driver is compared to the age of drivers.
b. A study is done to determine if the weekly grocery bill changes based on the number of family members.
c. Insurance companies base life insurance premiums partially on the age of the applicant.
d. Utility bills vary according to power consumption.
e. A study is done to determine if a higher education reduces the crime rate in a population.
The maximum discount value of the Entertainment庐 card for the 鈥淔ine Dining鈥 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: \(\hat{y}=a+bx\)
Due to erosion, a river shoreline is losing several thousand pounds of soil each year. A linear equation that expresses the total amount of soil lost per year is .
How many pounds of soil does the shoreline lose in a year?
Emma鈥檚 Extreme Sports hires hang-gliding instructors and pays them a fee of per class as well as per student in the class. The total cost Emma pays depends on the number of students in a class. Find the equation that expresses the total cost in terms of the number of students in a class.
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