Question
The following information shows the temperature (in Fahrenheit) outside and the number of students that go...
The following information shows the temperature (in Fahrenheit) outside and the number of students that go to class. Show your work to receive credit.
Temperature x 47 75 72 51 39 60 68 Students that go to class y 24 35 37 28 22 30 32
a) Compute the value of the correlation coefficient r.
b) Find the equation of the regression line.
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
11. The following table shows the class size and the average test score Class Size 15...
11. The following table shows the class size and the average
test score
Class Size
15
17
18
20
21
24
26
29
Average Test
score
85
86
85
82
80
78
75
72
Calculate:
Coefficient of correlation ( r )
Coefficient of determination (r2)
Slope of the regression line
Intercept of the regression line
Equation of the regression line
Predicted value of test score for class size = 22
Altitude and Temperature: listed below are altitudes (thousands of feet) and outside air temperature (degress fehrenheit)...
Altitude and Temperature: listed below are altitudes (thousands
of feet) and outside air temperature (degress fehrenheit) recorded
by the author during delta flight 1053 from New Orleans to Atlanta.
Altitude(x): 3 10 14 22 28 31 33 Tempertaure(y): 57 37 24 -5 -30
-41 -54
A. Draw scatter plot for the variables
B. Compute the value of the correlation coefficient
C. State the hypotheses
D. Test the significance of the correlation coefficient at alpha
= 0.05 using table 1
E....
A random sampling of 30 students are selected. The number of times they eat at a...
A random sampling of 30 students are selected. The number of
times they eat at a campus are shown in the following.
50 41 72 46 19 46
61 63 36 61 38 26
61 28 25 61 21 20
26 73 46 54 34 37
56 32 24 31 47 67
The frequency of the class 35 under 45 is
The cumulative frequency of the class with the interval 45
under 55 is
The class midpoint with the interval...
Dataset: Husband Wife 53 50 38 34 46 44 30 36 31 23 26 31 29 ...
Dataset:
Husband Wife
53 50
38 34
46 44
30 36
31 23
26 31
29 25
48 51
65 46
29 26
28 23
29 32
25 22
22 21
21 24
43 50
24 27
38 33
33 26
35 29
40 29
27 25
27 24
49 38
48 39
27 27
26 24
40 34
35 37
21 26
32 39
30 28
60 52
36 40
25 23
66 55
52 34
41 40
43 ...
One of the biggest changes in higher education in recent years has been the growth of...
One of the biggest changes in higher education in recent years
has been the growth of online universities. The Online Education
Database is an independent organization whose mission is to build a
comprehensive list of the top accredited online colleges. The
following table shows the retention rate (%) and the graduation
rate (%) for 29 online colleges. Retention Rate (%) Graduation Rate
(%) 7 25 51 25 4 28 29 32 33 33 47 33 63 34 45 36 60...
find a 95% confidence interval for the mean electricity consumption for all days having average temperature...
find a 95% confidence interval for the mean electricity
consumption for all days having average temperature 73.6 degrees. Also,
find a 95% prediction interval for the electricity consumption for a new
day with average temperature 73.6 degrees.
temperatureavg kilowattsperhour
77.5 45
80 73
78 43
78.5 61
77.5 52
83 56
83.5 70
81.5 70
75.5 53
69.5 51
70 39
73.5 55
77.5 55
79 57
80 68
79 73
76 57
76 51
75.5 55
79.5 56
78.5...
Student Grades Student Test Grade 1 76 62 2 84 90 3 79 68 4 88...
Student Grades
Student
Test
Grade
1
76
62
2
84
90
3
79
68
4
88
84
5
76
58
6
66
79
7
75
73
8
94
93
9
66
65
10
92
86
11
80
53
12
87
83
13
86
49
14
63
72
15
92
87
16
75
89
17
69
81
18
92
94
19
79
78
20
60
71
21
68
84
22
71
74
23
61
74
24
68
54
25
76
97...
The Student Government Association is interested in an estimate of the mean number of hours students...
The Student Government Association is interested in an estimate
of the mean number of hours students work per week. They take a
simple random sample of 89 students. The data they collected can be
found in the column labeled “Number of hours worked per week”. Use
the sample data to construct a 95% confidence interval for the mean
number of hours worked. Write one or two sentences to communicate
to the Student Government Association the estimate and the margin
of...
Helmets and lunches. The scatterplot shows the relationship between socioeconomic status measured as the percentage of...
Helmets and lunches.
The scatterplot shows the relationship between socioeconomic
status measured as the percentage of children in a neighborhood
receiving reduced-fee lunches at school and the percentage of bike
riders in the neighborhood wearing helmets.
% Recieving reduced lunch
% Wearing
helmets
6
39
3
64
15
34
21
24
20
57
18
33
38
50
33
40
52
32
43
33
80
12
75
12...
A business manager wanted to know if there was a relationship between daily temperature measured in...
A business manager wanted to know if there was a relationship
between daily temperature measured in degrees Fahrenheit and number
of employees who called-in sick each day. He collected the
following data over 10 days:
Daily Temperature: 64 60 67 63 60 64 72 66 60 69
# Called-in Sick: 33 32 30 37 34 28 31 27 31 26
a. Find the value of the correlation coefficient (r) for Daily
Temperature and # Called-in Sick.
b. What does the...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 2 minutes ago
asked 2 minutes ago
asked 24 minutes ago
asked 45 minutes ago
asked 55 minutes ago
asked 58 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 2 hours ago