Project #19514 - Statistics

I need each one of these done seperately. It is 3 assignments in total about 9 questions. Below are the assignments.

 

Must be done with SPSS and all work shown!

 

 

Tables and Graphs

1. A transportation museum has a building on both sides of Interstate 64/Highway 40. A walkway across the highway connects the two parts of the museum. At one of the exhibits, radar devices are placed in the walkways so that visitors can clock the speeds of motorists on the highway below. Following are the recorded speeds of motorists on a Tuesday afternoon (4:00 - 4:10).

83

77

75

74

72

72

69

68

68

68

68

62

62

62

62

62

61

61

61

61

61

61

60

58

58

58

58

58

57

57

57

57

56

55

54

54

54

54

54

53

52

52

52

52

52

47

47

43

40

40

For the data above, construct a frequency table, histogram, and a frequency polygon.

2. Forty professional aeronautics students enrolled in a psychology course were asked how many hours they had studied during the past weekend. Their responses are provided below.

11

2

0

13

5

7

1

8

12

11

7

8

9

10

7

4

6

10

4

7

8

6

7

10

7

3

11

18

2

9

7

3

8

7

3

13

9

8

7

7

For the data above, construct a frequency table, histogram, and a frequency polygon

 

 

 

next assignement

 

Normal Distributions and Standard Scores

The table below shows the average weight (in kilograms) and standard deviation of U.S. males from birth until 12 ½ months. Using the information you learned about properties of the normal distribution, standard deviations, and z-scores to find the answers to the following problems.

1. Tommy is 3 ½ months old and weighs 6.41kg. What percentage of males, at his age, weigh more than him.

2. Paul is 11 ½ months old and weighs 10.02kg. What percentage of males, his age, weigh more than him?

Age in Months

Mean Weight (kg)

SD

0

3.53

0.15

0.5

4

0.15

1.5

4.88

0.14

2.5

5.67

0.13

3.5

6.39

0.12

4.5

7.04

0.12

5.5

7.63

0.12

6.5

8.16

0.12

7.5

8.64

0.11

8.5

9.08

0.11

9.5

9.48

0.11

10.5

9.84

0.11

11.5

10.16

0.11

12.5

10.46

0.11

13.5

10.73

0.11

3. A recently diagnosed patient with Alzheimer's disease takes a cognitive abilities test. The patient scores a 54 on the test (mean = 52, standard deviation = 5). What percent of individuals would receive a higher score?

4. A fifth grader takes a standardized achievement test (mean = 125, sd = 15) and scores a 148. What is this child's percentile rank?

 

5. Pat and Chris both took a spatial abilities test (mean = 80, sd = 8). Pat scored a 76 and Chris scored a 94. What percent of individuals would score between Pat and Chris?

 

 

next assignement

 

Correlation and Regression

A survey was carried out to find the salaries for technicians working in maintenance

at Atlanta International Airport. The number of years spent in education was

recorded as was their yearly salary. Below in the table are the results for this survey.

Education (years) Income ($ ,000s)

8 20

12 28

10 27

20 55

16 45

18 60

13 29

12 25

16 37

14 32

a) Describe in words and statistical terms the relationship between the number of

years in education and corresponding salary earned. Discuss the results in terms of

this sample and the population in general. (50 points)

b) If William has 16 years in education what would be the expected yearly salary?

(25 points)

c) If John only has 5 years of education what salary would he expect on average?

(25 points)

Subject Mathematics
Due By (Pacific Time) 12/12/2013 11:25 am
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