MM 305 PGU Business Statistics and Quantitative Analysis Read a classmate’s response. Consider investing in your classmate’s stock and assume that the dail

MM 305 PGU Business Statistics and Quantitative Analysis Read a classmate’s response. Consider investing in your classmate’s stock and assume that the daily change is normally distributed. Using the Normal Distribution Excel template found in Unit 4 LiveBinder, your classmate’s mean and standard deviation, determine the probability for the daily change of this stock to have:
1. A decrease of 0.5 point or more (X ≤ -0.5)?
2. An increase of more than 0.5 point (X > 0.5)?
3. A decrease of 1 point or more (X ≤ -1)?
4. An increase of more than 1 point (X > 1)

Adjust automatic marking as read setting
I chose the stock for Xcel Energy, Inc.
The daily change of this stock is:

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Date

Open

High

Low

Close

Adj Close

Volume

Daily Change

2/7/2020

69.49

69.54

68.7

68.71

68.26784

2316900

-0.78

2/10/2020

68.91

69.12

68.54

69.06

68.61559

2306300

0.149994

2/11/2020

69.06

69.23

68.84

68.96

68.51623

2176200

-0.1

2/12/2020

68.75

69.25

68.55

69.03

68.58578

2032500

0.279999

2/13/2020

69.08

69.89

68.92

69.82

69.37069

2430700

0.739998

2/14/2020

69.99

70.4

69.77

70.26

69.80786

1959400

0.270004

2/18/2020

70.63

71.43

70.57

71.16

70.70207

3552200

0.530007

2/19/2020

70.94

71.24

70.77

70.79

70.33445

2284500

-0.15

2/20/2020

70.74

70.99

70.19

70.67

70.21523

2243900

-0.07

2/21/2020

70.72

71.42

70.44

70.82

70.36426

3563600

0.099999

2/24/2020

71.69

72.14

70.22

70.37

69.91716

3531000

-1.32

2/25/2020

70.48

70.65

68.73

68.84

68.397

3581800

-1.64001

2/26/2020

69.32

69.49

68.32

68.35

67.91015

3060200

-0.97

2/27/2020

68.33

68.67

64.81

64.85

64.43268

4225400

-3.48

2/28/2020

64.08

64.08

61.25

62.32

61.91896

7762100

-1.76

3/2/2020

62.22

65.99

62.15

65.87

65.44611

5117800

3.650002

3/3/2020

65.42

67.46

65.2

65.71

65.28714

5425200

0.290001

3/4/2020

66.53

69.41

66.06

69.2

68.75468

3454200

2.669998

3/5/2020

67.84

70.02

67.45

69.25

68.80436

5871800

1.410004

3/6/2020

66.51

70.16

66.23

70.15

69.69857

6689400

3.64

3/9/2020

66.36

69.99

65.3

67.99

67.55247

9885200

1.629997

3/10/2020

68.55

70.68

66.1

68.49

68.04925

8897400

-0.06001

3/11/2020

67.03

68.23

65.63

66.82

66.39

5815100

-0.21

3/12/2020

63.06

66.98

59.57

61.29

61.29

7310900

-1.77

3/13/2020

63.37

66.85

61

66.84

66.84

5724700

3.469997

3/16/2020

60.86

67

57.41

58.36

58.36

7884300

-2.5

3/17/2020

59.74

67.26

59.64

64.93

64.93

8959300

5.189998

3/18/2020

61.49

64

57.67

61.37

61.37

6690300

-0.12

3/19/2020

61.53

62.48

57.24

57.99

57.99

6840300

-3.54

3/20/2020

59

59.15

50.03

50.63

50.63

9147400

-8.37

The descriptive statistics summary table:

Daily Change

Mean

-0.0940006

Standard Error

0.469059349

Median

-0.0650025

Mode

#N/A

Standard Deviation

2.569143864

Sample Variance

6.600500194

Kurtosis

2.919792966

Skewness

-0.759032478

Range

13.559997

Minimum

-8.369999

Maximum

5.189998

Sum

-2.820018

Count

30

Here is my 5-Number Summary:

Five Number Summary

Minimum

-8.37

First quartile

-1.2325

Median

-0.065

Third quartile

0.6875

Maximum

5.189998

The Box & Whiskers Plot does not look very symmetric
The Mean, Xbar= -0.094 < Median -0.065 From this information and also the box plot, you can tell my daily stock price is not symmetric but instead slightly left-skewed.

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