Question

The National Football League (NFL) polls fans to develop a rating for each football game. Each game is rated on a scale from 0 (forgettable) to 100 (memorable). The fan ratings for a random sample of 12 games follow.

58 | 61 | 87 | 73 | 71 | 72 |

19 | 56 | 81 | 80 | 83 | 75 |

**a.** Develop a point estimate of mean fan rating
for the population of NFL games (to 2 decimals).

**b.** Develop a point estimate of the standard
deviation for the population of NFL games (to 4
decimals).

Answer #1

TOPIC:Point estimation.

The National Football League (NFL) polls fans to develop a
rating for each football game. Each game is rated on a scale from 0
(forgettable) to 100 (memorable). The fan ratings for a random
sample of 12 games follow.
56
61
86
73
71
73
21
57
81
80
83
74
a. Develop a point estimate of mean fan rating
for the population of NFL games (to 2 decimals).
b. Develop a point estimate of the standard
deviation for the...

The National Football League (NFL) polls fans to develop a
rating for each football game. Each game is rated on a scale from 0
(forgettable) to 100 (memorable). The fan ratings for a random
sample of 12 games follow. 58 61 86 73 73 72 21 57 80 80 83 73 a.
Develop a point estimate of mean fan rating for the population of
NFL games (to 2 decimals). b. Develop a point estimate of the
standard deviation for the...

The National Football League (NFL) polls fans to develop a
rating for each football game. Each game is rated on a scale from 0
(forgettable) to 100 (memorable). The fan ratings for a random
sample of 12 games follow. 57 61 85 73 71 73 20 58 80 79 84 73
a. Develop a point estimate of mean fan rating for the
population of NFL games (to 2 decimals).
b. Develop a point estimate of the standard deviation for the...

The National Football League (NFL) polls fans to develop a
rating for each football game. Each game is rated on a scale from 0
(forgettable) to 100 (memorable). The fan ratings for a random
sample of 12 games follow.
56 61 87 75 72 73
20 56 81 80 82 73
a. Develop a point estimate of mean fan rating for the
population of NFL games (to 2 decimals). 68
b. Develop a point estimate of the standard deviation for...

The National Football League (NFL) polls fans to develop a
rating for each football game. Each game is rated on a scale from 0
(forgettable) to 100 (memorable). The fan ratings for a random
sample of 12 games follow.
57
60
86
75
73
73
21
56
79
80
84
75
a. Develop a point estimate of mean fan rating
for the population of NFL games (to 2 decimals).
b. Develop a point estimate of the standard
deviation for the...

A population has a mean of 400 and a standard deviation of 90.
Suppose a sample of size 125 is selected and is used to
estimate . Use z-table.
What is the probability that the sample mean will be within +/-
8 of the population mean (to 4 decimals)? (Round z value
in intermediate calculations to 2 decimal places.)
What is the probability that the sample mean will be within +/-
14 of the population mean (to 4 decimals)? (Round...

The National Football League (NFL) is conducting a survey of fan
behavior by collecting a random sample of 240 NFL fans. One
question asks fans if they have ever participated in a violent act
in or around their favorite team's stadium. Nationally, 28% of NFL
fans have participated in a violent act around their team’s
stadium. The research finds that 14% of Green Bay Packers fans have
committed a violent act on game day. Conduct a significance test to
answer...

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...

A state legislator wants to determine whether his voters'
performance rating (00 - 100) has changed from last year to this
year. The following table shows the legislator's performance from
the same ten randomly selected voters for last year and this year.
Use this data to find the 95% confidence interval for the true
difference between the population means. Assume that the
populations of voters' performance ratings are normally distributed
for both this year and last year.
Step 1 of...

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