Question

Consider observations of the number of wins per season by National Football League teams over the years 1989-2008. The observed mean is 8 wins/season and the observed standard deviation is 3.02. A histogram illustrates these data.

Referring to these NFL data the z-score for 11 wins is?

Group of answer choices

a. None of these options

b. 1.32

c. 0.33

d. 0.99

e. 0.66

Answer #1

**Answer -** d. 0.99

**Explanation:**

Let X denote the number of wins per season by National Football League teams over the years 1989-2008 such that

Now Z-Score is given as:

where X is Raw Score.

Here, we want to calculate the Z-Score for X = 11 wins, so using above formula

The National Football League (NFL) records a variety of
performance data for individuals and teams. To investigate the
importance of passing on the percentage of games won by a team, the
following data show the conference (Conf), average number of
passing yards per attempt (Yds/Att), the number of interceptions
thrown per attempt (Int/Att), and the percentage of games won
(Win%) for a random sample of 16 NFL teams for a season.
Excel File
https://drive.google.com/file/d/1pfIsW3U477qRB8nj0fv_PD1fnRHV68Xx/view?usp=sharing
(a)
Using Excel Regression Analysis, write...

The following table shows the number of wins eight teams had
during a football season. Also shown are the average points each
team scored per game during the season. Construct a 90% prediction
interval to estimate the number of wins for teams that scored an
average of 25 points a game.
Determine the upper and lower limits of the prediction
interval.
UPL = ?
LPL = ?
Data:
Points_per_Game
Wins
26.3
11
20.2
9
24.3
6
28.2
12
13.7
5...

Data from the National Football League (NFL) from a recent
season reported the number of yards gained by each of the league's
wide receivers. The data in this Excel file
nfl_receiver_yds_webassign shows the yards gained by each wide
receiver in the NFL who gained 50 or more yards during the
season.
The number of yards gained is right-skewed and therefore a
normal model is NOT a good model for the data.
However, the square root of the number of yards...

The table below shows the number of interceptions thrown during
the season by seven randomly selected National Football League
teams and the number of games those teams won during the
season.
Wins
Interceptions
2
20
5
18
10
15
13
6
10
8
8
24
8
10
Find the correlation coefficient for this
data:
Group of answer choices
0.53
-67.82
67.82
-0.53

Data from the National Football League (NFL) from a recent
season reported the number of yards gained by each of the league's
wide receivers. The data in this Excel file
nfl_receiver_yds_webassign shows the yards gained by each wide
receiver in the NFL who gained 50 or more yards during the
season.
The number of yards gained is right-skewed and therefore a
normal model is NOT a good model for the data.
However, the square root of the number of yards...

0.8 Predicting NFL wins. Consider the following model for
predicting the number of games that a National Football League
(NFL) team wins in a season: Wins=3.6+0.5PF−0.3PA+∈
where PF stands for average points a team scores per game over
an entire season and PA stands for points allowed per game. Each
team plays 16 games in a season.
a. Identify the response variable in this model. Is it
quantitative or categorical?
b. Identify the explanatory variables in this model. Are they...

The National Football League (NFL) records a variety of
performance data for individuals and teams. To investigate the
importance of passing on the percentage of games won by a team, the
following data show the average number of passing yards per attempt
(yds/att) and the percentage of games won (WinPct) for a random
sample of 10 NFL teams for the 2011 season (NFL website, February
12, 2012). Team YDS/ATT WinPct Ariziona Cardinals 6.1 19 Atlanta
Falcons 6.6 27 Carinlona Panthers...

The National Football League (NFL) records a variety of
performance data for individuals and teams. To investigate the
importance of passing on the percentage of games won by a team, the
following data show the conference (Conf), average number of
passing yards per attempt (Yds/Att), the number of interceptions
thrown per attempt (Int/Att), and the percentage of games won
(Win%) for a random sample of 16 NFL teams for a season
Team
Conf
Yds/Att
Int/Att
Win%
Arizona Cardinals
NFC
6.7...

The National Football League (NFL) records a variety of
performance data for individuals and teams. To investigate the
importance of passing on the percentage of games won by a team, the
following data show the conference (Conf), average number of
passing yards per attempt (Yds/Att), the number of interceptions
thrown per attempt (Int/Att), and the percentage of games won
(Win%) for a random sample of 16 NFL teams for a
season
Team
Conf
Yds/Att
Int/Att
Win%
Arizona Cardinals
NFC
6.4...

A- Data from the National Football League (NFL) from a recent
season reported the number of yards gained by each of the league's
wide receivers. The data in this Excel file shows the yards gained
by each wide receiver in the NFL who gained 50 or more yards during
the season. The number of yards gained is right-skewed and
therefore a normal model is NOT a good model for the data. However,
the square root of the number of yards...

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