Question
In: Statistics and Probability
The data below represent the ages of drivers and the number of accidents reported for ...
The data below represent the ages of drivers and the number of accidents reported for
each age group in Pennsylvania for a selected year. Use an excel spreadsheet to
create a scatter plot and calculate the sample correlation coefficient. At the α = 0.10
level, test for a significant correlation between age and number of accidents.
|
Age, x |
16 |
17 |
18 |
19 |
20 |
21 |
|
Number of accidents, y |
6605 |
8932 |
8506 |
7349 |
6458 |
5974 |
Solutions
orchestra answered 2 years agoRelated Solutions
The data in the table represent the number of licensed drivers in various age groups and...
The data in the table represent the number of licensed drivers
in various age groups and the number of fatal accidents within the
age group by gender. Complete parts (a) to (c) below.
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Click the icon to view the data table.
<_16 12 227
12 77
16-20 6424 5180
6139 2113
21-24 6936 5016
6816 1537
25-34 18068 8587
17664 2780
35-44 20406 7990
20048 2742
45-54 19898 7138
19984 2285
55-64 14324 4527
14441 1514
65-74 8194 2274 ...
The data in the table represent the number of licensed drivers in various age groups and...
The data in the table represent the number of licensed drivers
in various age groups and the number of fatal accidents within the
age group by gender. Complete parts (a) to (c) below.
Age Number_of_Male_Licensed_Drivers_(000s),
Number_of_Fatal_Crashes, Number_of_Female_Licensed_Drivers0000s),
Number_of_Fatal_Crashes
<_16 12 227 12
77
16-20 6424 5180
6139 2113
21-24 6936 5016
6816 1550
25-34 18068 8565
17664 2780
35-44 20406 7990
20061 2742
45-54 19898 7126
19984 2285
55-64 14363 4527
14441 1514
65-74 8194 2274
8398 938
>_74 4803 2022 ...
In a study of the role of young drivers in automobile accidents, data on percentage of...
In a study of the role of young drivers in automobile accidents,
data on percentage of licensed drivers under the age of 21 and the
number of fatal accidents per 1000 licenses were determined for 32
cities. The data are stored in Table B. The first column contains a
number as the city code, the second column contains the percentage
of drivers who are under 21, and the third column contains the
number of fatal accidents per 1000 drivers. The...
In a study of the role of young drivers in automobile accidents, data on the percentage...
In a study of the role of young drivers in automobile accidents,
data on the percentage of licensed drivers under the age of 21 and
the number of fatal accidents per 1000 licenses were determined for
32 cities. The first column contains a number as city code, the
second column contains the percentage of drivers who are under 21,
and the third column contains the number of fatal accidents is
dependent upon the proportion of licensed drivers that are under...
1. The Allstate Insurance Company determined the average number of years between accidents for drivers in...
1. The Allstate Insurance Company determined the average number
of years between accidents for drivers in a large number of U.S.
cities. The ‘Accidents’ sheet in the ‘Lab12 Chp 10n11 S20’
spreadsheet contains the results for 32 randomly selected cities
east of the Mississippi River and 32 randomly selected cities west
of the Mississippi River.
(a) Are the samples independent or paired?
(b) Consider constructing a 90% confidence interval for the
difference in average number of years between accidents of...
The data below represent the number of days absent, x, and the final grade, y, for...
The data below represent the number of days absent, x, and the
final grade, y, for a sample of college students at a large
university. Complete parts (a) through (e) below.
Number of absences, x
Final grade, y
0
88.5
1
85.6
2
82.5
3
79.9
4
76.9
5
72.4
6
62.6
7
67.1
8
64.1
9
61.1
(a) Find the least-squares regression line treating the number
of absences, x, as the explanatory variable and the final grade,
y, as...
The data below represent the number of days absent, x, and the final grade, y, for...
The data below represent the number of days absent, x, and the
final grade, y, for a sample of college students at a large
university. Complete parts (a) through (e) below.
No. of absences, x
00
11
22
33
44
55
66
77
88
99
Final grade, y
88.188.1
85.285.2
82.282.2
79.879.8
76.876.8
72.372.3
62.862.8
67.267.2
64.364.3
61.461.4
(a) Find the least-squares regression line treating the number
of absences, x, as the explanatory variable and the final grade,
y, as...
The data below represent the number of days absent, x, and the final grade, y, for...
The data below represent the number of days absent, x, and the
final grade, y, for a sample of college students at a large
university. Complete parts (a) through (e) below.
0
1
2
3
4
5
6
7
8
9
89.0
86.1
83.0
80.5
77.4
73.0
63.3
67.8
64.8
61.8
(a) Find the least-squares regression line treating the number
of absences, x, as the explanatory variable and the final grade,
y, as the response variable.
(b) Interpret the slope...
The following data represent the ages in years of a sample of 25 employees from a...
The following data represent the ages in years of a sample of 25
employees from a government department:
31
43
56
23
49
42
33
61
44 28
48
38
44
35
40
64
52
42
47 39
53
27
36
35 20
Construct a stem and leaf display for the ages.
Find the median age.
Find the lower quartile of the ages.
Find the upper quartile of the ages.
Find the 60th percentile...
The City Council has gathered data on the number of minor traffic accidents and the number...
The City Council has gathered data on the number of minor
traffic accidents and the number of youth football games that occur
in a town over a weekend
X (Soccer Games) 20 30 10 12 15 25 24
Y (minor accdnt) . 6 9 4 5 7 8 9
Plot the data
Develop the estimating equation that describes the data
Predict the number of minor traffic accidents that will occur on
a weekend during which 33 soccer games takes place
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