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Introductory Statistics

Barbara Illowsky, Susan Dean

$Math Studyset Vaia Explanations$ Math

OER 2018 Edition · 902 pages

ISBN: 9781938168208

Chapter 12: Q.49 (page 719)

Enter your data into your calculator or computer. The pre- $1981$ data should not be included. Why is that so?

Short Answer

Expert verified

The linear equation is $- 3448225 + 1750 (year)$ .

Step by step solution

01

Given Information

The pre- $1981$ data should not be included.

02

Explanation

It is not known that whether pre- $1981$ data was collected for single year or multiple years. Therefore, researcher cannot include this data because it will not give accurate prediction.

Therefore,

# AlDS cases diagnosedlocalid="1649166838371" $= - 3448225 + 1750$ (year)

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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 $x$ is the number of endorsements the player has and $y$ is the amount of money made (in millions of dollars).

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

What does an $r$ value of zero mean?

The price of a single issue of stock can fluctuate throughout the day. A linear equation that represents the price of stock for Shipment Express is $y = 15 - 1.5 x$ where x is the number of hours passed in an eight-hour day of trading.

What are the slope and y-intercept? Interpret their meaning.

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

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

Draw a scatter plot of the data

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

A credit card company charges $\(10$ when a payment is late, and $\) 5$ a day each day the payment remains unpaid.

Is the equation $y = 10 + 5 x - 3 x^{2}$ linear? Why or why not?

See all solutions

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