Question

Player | First Round |
Final Round |
---|---|---|

Golfer 1 | 70 | 72 |

Golfer 2 | 71 | 72 |

Golfer 3 | 70 | 75 |

Golfer 4 | 72 | 71 |

Golfer 5 | 70 | 69 |

Golfer 6 | 67 | 67 |

Golfer 7 | 71 | 67 |

Golfer 8 | 68 | 73 |

Golfer 9 | 67 | 73 |

Golfer 10 | 70 | 69 |

Player | First Round |
Final Round |
---|---|---|

Golfer 11 | 72 | 72 |

Golfer 12 | 72 | 70 |

Golfer 13 | 70 | 73 |

Golfer 14 | 70 | 77 |

Golfer 15 | 68 | 70 |

Golfer 16 | 68 | 66 |

Golfer 17 | 71 | 70 |

Golfer 18 | 70 | 68 |

Golfer 19 | 69 | 68 |

Golfer 20 | 67 | 71 |

Suppose you would like to determine if the mean score for the first round of a golf tournament event is significantly different than the mean score for the fourth and final round. Does the pressure of playing in the final round cause scores to go up? Or does the increased player concentration cause scores to come down?

(a) Use α = 0.10 to test for a statistically significantly
difference between the population means for first- and fourth-round
scores. State the null and alternative hypotheses. (Use
μ_{d} = mean score first round − mean score fourth
round.

Calculate the value of the test statistic. (Round your answer to three decimal places.)

Calculate the *p*-value. (Round your answer to four
decimal places.)

*p*-value =

(b) What is the point estimate of the difference between the two population means? (Use mean score first round − mean score fourth round.)

Answer #1

a)

value of the test statistic =-1.445

p value =0.1648

b)

point estimate of the difference between the two population means = -1

Scores in the first and fourth (final) rounds for a sample of 20
golfers who competed in golf tournaments are shown in the following
table.
Suppose you would like to determine if the mean score for the
first round of a golf tournament event is significantly different
than the mean score for the fourth and final round.
layer
First
Round
Final
Round
Golfer 1
70
72
Golfer 2
71
72
Golfer 3
70
75
Golfer 4
72
71
Golfer 5...

You may need to use the appropriate technology to answer this
question.
Scores in the first and fourth (final) rounds for a sample of 20
golfers who competed in golf tournaments are shown in the following
table.
Player
First
Round
Final
Round
Golfer 1
70
72
Golfer 2
71
72
Golfer 3
70
74
Golfer 4
72
71
Golfer 5
70
69
Golfer 6
67
67
Golfer 7
71
67
Golfer 8
68
72
Golfer 9
67
72
Golfer 10...

Q1. Scores in the first and fourth (final) rounds for a sample
of 20 golfers who competed in a Golf Competition held on Guam are
shown in the following table. Suppose you would like to determine
if the mean score for the first round of the event is significantly
different than the mean score for the fourth and final round. Does
the pressure of playing in the final round cause scores to go up?
Or does the increased player concentration...

Scores in the first and final rounds for a sample of 20 golfers
who competed in tournaments are contained in the table below.
Answer the following questions.
Player
First Round
Final Round
Michael Letzig
70
66
Scott Verplank
67
77
D.A. Points
71
65
Jerry Kelly
73
72
Soren Hansen
73
67
D.J. Trahan
77
69
Bubba Watson
77
72
Reteif Goosen
67
68
Jeff Klauk
66
65
Kenny Perry
76
68
Aron Price
68
66
Charles Howell
72
69...

The U.S. Open Golf Tournament was played at Congressional
Country Club, Bethesda, Maryland, with prizes ranging from $465,000
for first place to $5000. Par for the course is 70. The tournament
consists of four rounds played on different days. The scores for
each round of the 32 players who placed in the money (more than
$17,000) are given. The scores for the first round were as
follows.
71
65
67
73
74
73
71
71
74
73
71
70
75...

Mid Score
Final Score
80
78
87
85
72
81
69
54
86
70
83
73
78
89
75
84
74
86
75
79
84
75
73
63
74
72
73
69
80
86
75
78
72
75
77
68
76
77
66
78
74
77
71
73
85
79
74
74
76
79
76
73
84
72
77
81
78
86
86
76
81
83
78
83
85
86
73
71
83
83
83
79
72
68
83
90...

A section of an Introduction to Psychology class took an exam
under a set of unusual circumstances. The class took the exam in
the usual classroom, but heavy construction noise was present
throughout the exam. For all previous exams using the same format
and same questions, student scores were normally distributed with a
mean of Ã??Ã?Âµ = 75.00 and a population standard deviation (sigma)
= 10.50. To understand the possible effects of the construction
noise, you have been asked to...

StudentNO
Gender
Height in inchese
1
Female
63
2
Female
64.0
3
Male
67.0
4
Female
59
5
Male
60
6
Female
61
7
Female
62
8
Female
63
9
Female
63
10
Female
64
11
Male
64
12
Female
65
13
Female
65
14
Female
65
15
Female
65
16
Female
66
17
Female
66
18
Male
67
19
Male
67
20
Male
67
21
Female
67
22
Male
67
23
Male
67
24
Female
67.5
25
Male
68...

Scores turned in by an amateur golfer at the Bonita Fairways
Golf Course in Bonita Springs, Florida, during 2011 and 2012 are as
follows:
2011 Season
73
77
78
76
74
72
74
76
2012 Season
70
69
74
76
84
79
70
78
Calculate the mean (to the nearest whole number) and the
standard deviation (to 2 decimals) of the golfer's scores, for both
years.
2011
Mean
Standard deviation
2012
Mean
Standard deviation
What is the primary difference in...

The following data values represent a sample of
the heights of female college basketball players. SHOW WORK.
Heights in Inches
65 66 66 67 68 68 68 69 69 69 69 70 71
72 72 72 73 75 75 75 75 76 76 76 76
a) Determine (to two decimal places) the mean height and sample
standard deviation of the heights.
b) Determine the z-score of the data value X = 75 to the
nearest hundredth.
c) Using results from...

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