# Activity 4 Bus Stat

Activity I – Your firm is interested in learning more about how its salaries relate to its employees’ tenure with the firm. It has collected the following data for

2

5

of its employees.

14

28

14

6

14

11

15

14

32

17

20

16

21

3

14

9

25

14

 EMPLOYEE NUMBER TENURE (YEARS) SALARY (\$) 1 15 5 3 , 9 0 8 2 32 7 8,2 30 3 1 4 55,1 6 4 4 20 57,647 5 25 63, 11 1 6 54,991 7 28 74,571 8 30 73, 18 9 9 71,859 10 17 55,978 11 61,676 12 44,865 13 21 64,676 59,101 58,441 16 81,964 29 76,373 18 33 82,860 19 27 70,019 58,474 26 80,074 22 45,594 23 63,676 24 68,444 70,306

Plot these data points and describe using regression how salary relates to firm tenure for this group.

Activity II – The data attached contains information on customers’ ratings of your product (CustRate), on a scale of 1 to 100, along with demographic information. The demographic information includes: income (Inc), age (Age), education (Educ), and marital status (Marr). The last variable equals one if the respondent is married and zero otherwise. Assume the data-generating process can be written as:

CustRate
i=α+β1Inc
i+β2Age
i+β3Educ
i+β4Marr
i+U
i.

a. Test the hypothesis that income has no impact on customer rating, using a confidence level of 95%. Be sure to provide the reasoning behind your result.

b. Test the hypothesis that β2=0.05, using a confidence level of 90%. Be sure to provide the reasoning behind your result.

c. Build a 95% confidence interval for the impact of education on customer rating. Be sure to provide the reasoning for your result.

d. Build a 95% confidence interval for the impact of being married on customer rating. Be sure to provide the reasoning for your result.

e. Predict the change in customer rating if a customer’s income increases by \$10,000, with no change in age, education, or marital status.

## Sheet 1

CustRate Inc Age Educ Marr 2

8 58

4

0

2 43 18

0
79 89893 83 17

1
35 5

80 34 51 13

1
35

6

2 84

3 40

13
0
36 808

54 56

13
0
41 86 47

0 65

18
1
43

7

45

18

40

19

1
35

55

958 44 14

0
18

50 27

9

41

12

1
46 10

2

49

9 57 20

0
17

6

28 16

43
18
0
36

79

30

3 76

16
0
83

10

69 60 77

16
0
56

89134

76

15

0
8

39 29

7

35
14
1
58

9

31

30

55
19
1
48 70

350

55
16
0
58

920

32 67

18
1
49

78 53

6

76

11

1
35

55760

46
13
1
45

48

63

1

45
13
0
50

486

22 38

14
1
86

10

24

60

80
16
0
32

38090

32
11
0
44

60977

44
16
1
49

6

59 62

39
19
1
44

4

74

47 37

10
1
16

52

479

47
16
1
45

51

23

8

55
10
0
50

79284 82

11
1
52

73

283

41
14
0
53

7

81

56 64

13
0
26 42

190

42
10
0
58

90846

82
15
1
75 88087 71

12
0
54

77947

79
12
1
46

73839 72

10
1
67

79504

70
17
1
79

103551

71
20
0
55

81651

73
11
1
38

76964

73
11
0
41

92002

77
16
1
56

92630

65
17
0
38

81637

62
13
0
41

59079

60
10
0
47

53481 33

13
0
33

61

981

31
18
0
22

47444

34
11
0
45

62345

61
10
1
59

90636

71
11
0
39

66

924

47
16
0
6

43472

34
14
0
36

63223

41
19
0
83

102024

83
16
1
60

91

85

9

50
20
1
50

51800

32
17
1
68 74147

46
20
0
41

49001

40
15
1
21 63189

52
12
0
45

65693

40
20
1
59

82952

81
14
0
23

65459

37
19
0
47

73623

67
11
1
46

58703

53
10
0
39

75724

52
14
0
69

89721

79
17
1
84

92167

69
18
1
50

84185

75
15
0
45

62827

41
16
0
66

73275

54
15
0
81

97682

73
11
0
68

91359

84
10
1
68

104446

81
16
1
15

32026

38
10
0
24

63546

49
16
1
37

61179

38
17
1
50

71387

56
19
0
64

100364

71
18
1
24

37724

28
10
1
68

84308

60
12
1
38

61819

50
16
1
20

34068

29
13
1
28

54646

30
17
1
57

84758

59
12
1
41

50313

30
19
0
62

73319

64
12
0
19

52824

36
15
0
59

96290

63
20
1
59

94847

82
10
0
73

106430

83
20
1
68

94519

72
17
1
60

79568

44
20
0
33

70571

65
13
1
42

77195

56
18
0
61

94754

67
13
0
57

63482

60
12
1
36

54621

40
18
1
58

98958

83
16
1
17

6

25

14

41
19
1
58

94638

66
12
1
59

77590

65
16
1
56

62972

52
18
1
34

75715

50
18
1
50

66851

48
14
0
26

52452

48
10
1
61

120595

76
16
0
55

81983

79
13
1
41

66972

52
15
0
28

38026

35
17
1
40

93236

76
18
0
39

98003

75
17
1
26

43014

42
12
1
34

57142

41
13
0
55

89995

74
18
1
32

68975

50
16
0
53

76995

78
15
0
31

41771

32
13
1
75

107119

82
17
0
36

79423

60
15
1
33

52455

37
11
0
43

74186

53
18
1
50

88230

76
13
1
49

77681

68
14
0
53

81907

60
20
0
32

74105

53
11
1
71

103295

82
17
1
43

62365

41
20
0
24

50388

34
17
0
29

73826

43
18
0
50

96867

76
20
0
66

81473

59
15
0
46

84895

71
18
1
14

50703

29
17
1
22

50514

35
19
1
65

91143

76
17
1
33

60094

51
11
1
34

72363

40
18
0
55

61569

65
10
1
61

111907

80
13
0
19

50860

39
13
0
69

81328

63
20
0
55

76263

43
18
0
39

52869

34
17
1
76

92165

79
12
1
41

60211

55
14
1
74

88320

74
19
0
49

73401

71
12
0
29

41098

28
18
1
45

46355

52
10
0
64

59752

52
10
1
52

86557

62
13
1
25

50342

46
14
0
61

107203

74
18
0
53

50377

31
14
1
24

72087

57
12
1
27

68073

45
17
1
39

68824

62
10
1
61

84953

42
20
1
76

88289

77
15
0
42

54169

42
20
1
40

47445

50
12
0
64

79659

67
14
0
59

87149

53
20
0
58

85160

65
16
0
86

115642

79
19
0
30

26671

30
10
0
65

99436

83
14
1
57

99677

80
17
0
50

75679

45
20
1
64

86013

76
11
1
49

66922

49
20
0
51

95313

62
15
0
60

102551

69
19
0
47

71334

34
19
0
67

68982

48
16
0
70

89113

74
15
0
68

73545

61
14
1
49

92819

79
11
1
49

78207

84
13
0
46

83274

62
18
0
33

31363

28
11
0
33

57397

48
14
0
45

95774

81
19
0
37

57384

44
19
1
42

63775

63
10
1
80

109560

85
17
0
72

98326

60
20
1
54

73643

64
15
1
48

89103

59
16
0
58

94844

56
17
0
30

65985

39
17
1
56

77875

76
10
0
58

69793

67
13
0
57

74239

42
20
0
55

100675

70
19
1
55

83572

56
17
1
77

99332

63
20
1
44

73084

59
14
0
73

108769

82
15
1
41

59581

45
12
0
54

70716

69
13
0
56

94821

78
14
0
33

62336

37
14
0
62

95083

69
20
0
43

66276

36
19
1
70

108664

79
18
0
56

90094

62
16
1
62

93481

78
20
0
42

83496

62
19
0
39

62503

54
11
1
66

84253

83
17
0
79

105591

76
19
0
36

67780

57
13
1
80

124010

83
19
0
59

74465

63
17
0
45

50544

31
18
0

## Calculate the price of your order

Select your paper details and see how much our professional writing services will cost.

We`ll send you the first draft for approval by at
Price: \$36
• Freebies
• Format
• Formatting (MLA, APA, Chicago, custom, etc.)
• Title page & bibliography
• Amendments to your paper when they are needed
• 275 word/double-spaced page
• 12 point Arial/Times New Roman
• Double, single, and custom spacing

Our custom human-written papers from top essay writers are always free from plagiarism.

Your data and payment info stay secured every time you get our help from an essay writer.

Your money is safe with us. If your plans change, you can get it sent back to your card.

## How it works

1. 1
You give us the details
Complete a brief order form to tell us what kind of paper you need.
2. 2
We find you a top writer
One of the best experts in your discipline starts working on your essay.
3. 3
You get the paper done

## Samples from our advanced writers

Check out some essay pieces from our best essay writers before your place an order. They will help you better understand what our service can do for you.

• Analysis (any type)
Political science
APA
• Coursework
APA
• Essay (any type)
Is Pardoning Criminals Acceptable?
Criminal Justice
MLA

## Perks of our essay writing service

We offer more than just hand-crafted papers customized for you. Here are more of our greatest perks.

• Swift delivery
Our writing service can deliver your short and urgent papers in just 4 hours!
• Professional touch
We find you a pro writer who knows all the ins and outs of your subject.
• Easy order placing/tracking
Create a new order and check on its progress at any time in your dashboard.
• Help with any kind of paper
Need a PhD thesis, research project, or a two-page essay? For you, we can do it all.
• Experts in 80+ subjects
• Calculations and code
We also do math, write code, and solve problems in 30+ STEM disciplines.

• ### Is there a possibility of plagiarism in my completed order?

We complete each paper from scratch, and in order to make you feel safe regarding its authenticity, we check our content for plagiarism before its delivery. To do that, we use our in-house software, which can find not only copy-pasted fragments, but even paraphrased pieces of text. Unlike popular plagiarism-detection systems, which are used by most universities (e.g. Turnitin.com), we do not report to any public databases—therefore, such checking is safe.

We provide a plagiarism-free guarantee that ensures your paper is always checked for its uniqueness. Please note that it is possible for a writing company to guarantee an absence of plagiarism against open Internet sources and a number of certain databases, but there is no technology (except for turnitin.com itself) that could guarantee no plagiarism against all sources that are indexed by turnitin. If you want to be 100% sure of your paper’s originality, we suggest you check it using the WriteCheck service from turnitin.com and send us the report.

• ### I received some comments from my teacher. Can you help me with them?

Yes. You can have a free revision during 7 days after you’ve approved the paper. To apply for a free revision, please press the revision request button on your personal order page. You can also apply for another writer to make a revision of your paper, but in such a case, we can ask you for an additional 12 hours, as we might need some time to find another writer to work on your order.

After the 7-day period, free revisions become unavailable, and we will be able to propose only the paid option of a minor or major revision of your paper. These options are mentioned on your personal order page.