Question
In: Math
Age Mileage 6 53808 7 82838 11 115903 6 54903 8 77564 10 95911 4 40686...
| Age | Mileage |
| 6 | 53808 |
| 7 | 82838 |
| 11 | 115903 |
| 6 | 54903 |
| 8 | 77564 |
| 10 | 95911 |
| 4 | 40686 |
| 12 | 126675 |
| 15 | 167636 |
| 14 | 128798 |
| 10 | 96589 |
| 5 | 35049 |
A used car dealer wants to develop a regression equation that determines mileage as a function of the age of a car in years. He collects the data shown below for the 12 cars he has on his lot.
a) What is the slope of the regression equation? Give your
answer to two decimal places.
b) What is the value of the correlation coefficient? Give your
answer to two decimal places.
c) A 4 year old car is delivered to his lot with 160000 miles.
Manually enter these values in the data table above and rerun the
regression analysis. What is the value of the slope? Give your
answer to two decimal places.
d) Including the additional car, what is the value of the
correlation coefficient? Give your answer to two decimal
places.
e) Did the additional car strengthen or weaken the linear
relationship between age and mileage?
It strengthened the linear relationship.
It weakened the linear relationship.
Can not be determined.
Solutions
milcah answered 1 year agoRelated Solutions
3 6 4 8 1 10 2 9 11 12 15 22 3 6 7 5...
3
6
4
8
1
10
2
9
11
12
15
22
3
6
7
5
8
1
12
14
Each column represents a different treatment given to sick rats.
Each cell is a different rat. Use statistical analysis and use post
hoc testing using contrasts to find the best
treatment.
Treatment 1: vitamins
Treatment 2: prescription pills
Treatment 3: brain surgery
Treatment 4: shock therapy
Treatment 5: dietary changes
3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5 Using the previous question...
3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5 Using the previous question
's scores, If three points were added to every score in this
distribution, what would be the new mean? If three points were
added to every score in this distribution, what would be the new
standard deviation. Remember, you have already calculated
population standard deviation in a previous problem. This problem
requires two answers.
Match No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14...
Match No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Player A
8
42
56
68
91
123
12
46
57
137
5
80
14
10
19
Player B
38
44
46
59
57
61
48
42
51
39
58
41
55
45
68
1. For the given data set representing the runs scored by two
players in last 15 matches, conduct the following analysis:
i. Which average you will use to summarize...
Q (actual): 4 6 7 10 13 Q*: 5 6 6 8 10 From the above...
Q (actual):
4
6
7
10
13
Q*:
5
6
6
8
10
From the above table,
What is SSE?
What is TSS?
What is R-squared?
Period 0 1 2 3 4 5 6 7 8 9 10 11 PBP NPV IRR...
Period
0
1
2
3
4
5
6
7
8
9
10
11
PBP
NPV
IRR
Project A
$
(1,000,000)
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 400,000
Project B
$
(1,000,000)
$ 500,000
$ 500,000
$ 500,000
Project C
$
(80,000)
$ 1,040
$ 9,456
$ 11,405
$ 18,567
$ 47,453
$ 6,394
$ 45,727
$ 51,933
$ 85,625
Project D
$
(400,000)
$ 4,161...
Input Data Month 0 1 2 3 4 5 6 7 8 9 10 11 12...
Input Data
Month
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Revenue
$
-
$
-
$
-
$ -
$ -
$
-
$ 2,500
$ 2,875
$ 3,306
$ 3,802
$ 4,373
$ 5,028
$ 5,783
$ 6,650
$ 7,648
$ 8,795
$ 10,114
$ 11,631
$ 13,376
$ 15,382
$ 17,689
$ 20,343
$ 23,394
$ 26,903
Monthly Revenue Growth...
Input Data Month 0 1 2 3 4 5 6 7 8 9 10 11 12...
Input Data
Month
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Revenue
$
-
$
-
$
-
$ -
$ -
$
-
$ 2,500
$ 2,875
$ 3,306
$ 3,802
$ 4,373
$ 5,028
$ 5,783
$ 6,650
$ 7,648
$ 8,795
$ 10,114
$ 11,631
$ 13,376
$ 15,382
$ 17,689
$ 20,343
$ 23,394
$ 26,903
Monthly Revenue Growth...
Post Position 1 2 3 4 5 6 7 8 9 10 Wins 19 14 11...
Post Position
1
2
3
4
5
6
7
8
9
10
Wins
19
14
11
15
15
7
8
12
5
11
The table below lists the frequency of wins for different post
positions in the Kentucky Derby horse race.
Use a 0.05 significance level to test the claim that the
likelihood of winning is the same for the different post
positions.
What is the critical value (the X2 value)? [Round to the nearest
thousandths place]
Period 0 1 2 3 4 5 6 7 8 9 10 11 PBP NPV IRR...
Period
0
1
2
3
4
5
6
7
8
9
10
11
PBP
NPV
IRR
Project A
$
(1,000,000)
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 200,000
$ 400,000
Project B
$
(1,000,000)
$ 500,000
$ 500,000
$ 500,000
Project C
$
(80,000)
$ 1,040
$ 9,456
$ 11,405
$ 18,567
$ 47,453
$ 6,394
$ 45,727
$ 51,933
$ 85,625
Project D
$
(400,000)
$ 4,161...
Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15...
Day
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Number of Aides Absent
5
8
11
15
4
2
7
1
4
6
14
19
3
5
8
In which of the following ranges you can find the Upper Control
Limit of the control chart?
0.1427
0.1536
0.1677
Not computable with information available
In which of the following ranges you can find the Lower Control
Limit of the control chart?
Does not exit...
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