Chapter 1.3, Problem 104E

(a)

To determine

To calculate: The linear model for the JetBlue net income J as a function of the Alaska Air Group net income A using the data of $2010$ and $2013$ if the table representing the net incomes (in millions of dollars) of various airlines during the period $2010-2014$ is as follows,

Year	$2010$	$2011$	$2012$	$2013$	$2014$
Southwest Airlines	$450$	$200$	$400$	$750$	$900$
JetBlue Airways	$100$	$90$	$130$	$170$	$400$
Alaska Air Group	$250$	$250$	$300$	$500$	$600$

(b)

To determine

The year from the year $2011$, $2012$ and $2014$ which provides the best estimation about the JetBlue’s net income when the table representing the net incomes (in millions of dollars) of various airlines during the period $2010-2014$ is as follows,

Year	$2010$	$2011$	$2012$	$2013$	$2014$
Southwest Airlines	$450$	$200$	$400$	$750$	$900$
JetBlue Airways	$100$	$90$	$130$	$170$	$400$
Alaska Air Group	$250$	$250$	$300$	$500$	$600$

(c)

To determine

The units of measurement of the slope and also interpret about the net incomes of JetBlue Airways and Alaska Air Group from the slope which is calculated in part (a).