Graded Homework 14
You have submitted this Homework 3 times (including this time).
You may submit this Homework a total of 40 times and receive full credit.
This quiz covers more linear regression material (F and t tests in the context of the
simple regression model), which can be found on pages 8186.
Question #1
Look at the example on slide 28 (page 83) of the course packet, about Armani Pizza.
The coefficient of determination is
0.92807
, the standard error of the estimate is
28.13339035
, the estimated slope coefficient is
10.89424
, the corresponding
measured test statistic of a twotail test on the significance of the slope parameter is
10.16004421
.
After looking at the pvalue corresponding to this test statistic, your conclusion is that
the slope is different than zero, the model is useful.
You received a raw score of 100% on this question.
Question #2
Most basketball fans wanted the 1998 NBA lockout to end soon, and so did the
players and the owners of the teams  so why wasn't it over sooner? You were hired
as a statistician by HOOPS (Helping Out Organizers and Players of Sports) Inc. to
sort out if there was any reason for that strike to go on.
You were given a data set on the average salaries of some teams and the profits made
by the teams in the 1997 season (both in millions of dollars). Run a regression of
average salaries on profits to see whether players were really justified in continuing
with the lockout of the NBA claiming that "their salaries are not determined by the
profits that the club owners are making."
You can download the data in EXCEL format from
here
and perform the regression
analysis in EXCEL to answer the following questions.
The coefficient of determination is
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 Spring '08
 Petry
 Statistics, raw score, Armani Pizza

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