Question

6. Using the class data (see Blackboard file - "Class Survey Data - PSS-10 and GAS") calculate the correlation between the GAS – Goal disengagement and the GAS – Goal reengagement scores. Write the results in a statistical statement.

7. Using the class data calculate the correlation between the GAS – Goal disengagement and the PSS-10 scores. Write the results in a statistical statement.

8. Using the class data calculate the correlation between the GAS – Goal reengagement scores and the PSS-10 scores. Write the results in a statistical statement.

Student PSS-10 GAS-D
GAS-R

1 20 5 21

2 14 10 22

3 23 11 14

4 18 8 18

5 15 8 20

6 26 10 21

7 10 19 22

8 10 13 27

9 12 11 23

10 31 7 18

11 23 11 20

12 20 5 25

13 20 15 24

14 27 10 22

15 17 11 25

16 18 4 18

17 15 8 25

18 20 16 21

19 21 12 25

20 31 5 18

21 25 5 23

22 14 8 20

23 11 9 23

24 23 9 21

25 27 5 23

26 22 8 23

27 14 12 24

28 23 4 15

29 13 13 23

30 18 8 18

31 11 7 27

32 10 7 21

33 28 4 16

34 12 4 19

35 19 16 25

36 14 9 20

37 21 13 23

38 22 16 28

39 18 10 25

40 20 10 13

41 8 4 9

42 26 10 24

43 16 8 23

44 25 6 17

45 21 13 25

46 29 9 22

47 20 9 16

48 21 13 22

49 12 12 24

50 21 7 22

51 27 11 18

52 15 16 20

53 7 11 24

54 23 9 12

55 15 8 16

56 8 4 23

57 14 6 25

58 24 11 19

59 27 6 22

60 13 32 27

61 30 13 22

62 27 7 21

63 23 14 22

64 24 10 24

65 12 12 28

66 13 9 23

67 17 5 21

68 28 9 20

69 19 9 27

70 6 6 24

71 24 13 18

72 9 9 26

73 16 11 22

74 14 15 14

75 22 14 21

76 22 8 22

77 25 8 17

78 11 11 12

79 14 10 16

80 9 14 21

81 13 9 19

82 16 11 24

83 23 4 19

84 26 14 24

85 23 11 22

86 27 6 23

87 1 12 18

88 12 11 6

89 12 12 16

90 22 15 24

91 9 7 23

92 12 9 23

Answer #1

The results of a sample of 372 subscribers
toWiredmagazine shows the time spent using the Internet
during the week. Previous surveys have revealed that the population
standard deviation is 10.95 hours. The sample data can be found in
the Excel test data file.
What is the probability that another sample of 372 subscribers
spends less than 19.00 hours per week using the Internet?
Develop a 95% confidence interval for the population mean
If the editors of Wiredwanted to have the...

Assuming that the population standard deviation is
unknown, calculate the 95% confidence interval of the
population mean.
The following is the data. Calculating Process should be shown
by Excel (Formulas). What formulas in statistics are used?
7
21
23
24
18
16
2
19
11
6
3
13
17
9
5
12
13
17
4
14
15
25
12
24
22
14
14
20
15
11
26
17
21
11
4
13
16
14
13
14
25
23
9
15...

____________________________________________
The results of a sample of 372 subscribers to Wired
magazine shows the time spent using the Internet during the week.
Previous surveys have revealed that the population standard
deviation is 10.95 hours. The sample data can be found in the Excel
test data file.
What is the probability that another sample of 372 subscribers
spends less than 19.00 hours per week using the Internet?
____________________________________________
Develop a 95% confidence interval for the population mean
____________________________________________
If the editors...

A manufacturing company is purchasing metal pipes of standard
length from two different suppliers, ABC and XYZ. In the past two
months there are increasing complaints by the Production Manager
that delivery times by ABC present higher variability in comparison
to the delivery times by XYZ. The Production Manager is worried
that this variability will make it harder to efficiently schedule
the production process. If the variance of XYZ remains unchanged,
what should be the variance of ABC in order...

A study was conducted to see if students’ writing skills
continue to improve as the academic year progresses. English 101
students were asked to write essays throughout the year in
September, December, March and June. The scores were compared to
see if there is any improvement in this one-year course. Was there
a significant improvement?
The appropriate test for this problem is:
one-way ANOVA
repeated measurements
Student
September
December
March
June
1
17
23
21
24
2
25
21
21...

A manufacturing company is purchasing metal pipes of standard
length from two different suppliers, ABC and XYZ. In the past two
months there are increasing complaints by the Production Manager
that delivery times by ABC present higher variability in comparison
to the delivery times by XYZ. The Production Manager is worried
that this variability will make it harder to efficiently schedule
the production process.
Does the sample data indicate a statistically significant
difference at the 5% level? Justify your answer....

A manufacturing company is purchasing metal pipes of standard
length from two different suppliers, ABC and XYZ. In the past two
months there are increasing complaints by the Production Manager
that delivery times by ABC present higher variability in comparison
to the delivery times by XYZ. The Production Manager is worried
that this variability will make it harder to efficiently schedule
the production process. Does the sample data indicate a
statistically significant difference at the 5% level? Justify your
answer....

A company has the following returns over the past 30 months:
Month Ret.(%) Month Ret.(%) Month Ret.(%)
1) 3 11 -3 21 -1
2) -16 12 -2 22 -24
3) 31 13 -8 23 -14
4) 33 14 2 24 -19
5) -23 15 35 25 -19
6) -17 16 11 26 33
7) 8 17 -20 27 -18
8) -19 18 15 28 23
9) -13 19 -12 29 6
10 -17 20 17 30 5
What is...

Part A. In the past it has been found that the arrival time have
a population mean value of μ = 13 and a population standard
deviation of σ = 6.26. Using the given data, test whether this mean
has changed. Use the critical value approach to test the
hypothesis. The significance level alpha is set at 0.05 . The
original data of time taken is given below. Show the process by
using excel (Formulas).
Part B. Test the hypothesis...

We want to compare the
average gas mileage of American-made cars vs. Japanese-made
cars.
The claim is that the Japanese cars and American cars do not get
the same gas mileage.
Use the list data below to test the hypothesis that the Japanese
cars and American cars do not get the same gas mileage.
The American cars are in list1 and the Japanese cars in list2
below
We do not know whether the mileages are normally distributed or
not, but...

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