Question
In: Statistics and Probability
Bradford Electric Illuminating Company is studying the relationship between kilowatt-hours (thousands) used and the number of...
Bradford Electric Illuminating Company is studying the relationship between kilowatt-hours (thousands) used and the number of rooms in a private single-family residence. A random sample of 10 homes yielded the following.
| Number of Rooms | Kilowatt-Hours (thousands) | Number of Rooms | Kilowatt-Hours (thousands) | |||||||||
| 12 | 9 | 8 | 6 | |||||||||
| 9 | 7 | 10 | 8 | |||||||||
| 14 | 10 | 10 | 10 | |||||||||
| 6 | 5 | 5 | 4 | |||||||||
| 10 | 8 | 7 | 7 | |||||||||
-
Determine the 0.95 confidence interval, in thousands of kilowatt-hours, for the mean of all six-room homes. (Do not round intermediate calculations. Round your final answers to 4 decimal places.)
-
Determine the 0.95 prediction interval, in thousands of kilowatt-hours, for a particular six-room home. (Do not round intermediate calculations. Round your final answers to 4 decimal places.)
Solutions
Expert Solution
---------------------------------------------------------------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------------------------------------------------------
orchestra answered 2 years agoRelated Solutions
An environmentalist wants to determine the relationship between the number of fires, in thousands, and the number of acres burned, in hundreds of thousands.
An environmentalist wants to determine the relationship between the number of fires, in thousands, and the number of acres burned, in hundreds of thousands. Based on this data, decide if the correlation is significant at alpha = 0.05.
Number of fires x
73
74
58
48
80
65
54
49
Number of acres burned y
64
46
22
23
51
12
29
10
1. Draw a scatter plot of the data.
2. Showing all work calculate r.
3. Showing...
An environmentalist wants to determine the relationship between the number of fires, in thousands, and the...
An environmentalist wants to determine the relationship between
the number of fires, in thousands, and the number of acres burned,
in hundreds of thousands. Based on this data, decide if the
correlation is significant at alpha = 0.05. Number of fires x 73 74
58 48 80 65 54 49 Number of acres burned y 64 46 22 23 51 12 29
10
5. When x = 61 what is
y and what does it mean I this context.
6....
An environmentalist wants to determine the relationship between the number of fires in thousands, and the...
An environmentalist wants to determine the relationship between
the number of fires in thousands, and the number of acres burned in
hundreds of thousands. Based on the data, decide in the correlation
is significant at alpha = 0.05.
Number of fires (x) - 73 | 74 | 58 | 48 | 80 | 65 | 54 | 49
Number of acres burned (y) - 64 | 46 | 22 | 23 | 51 | 12 | 29 |
10
Determine...
An environmentalist wants to determine the relationship between the number of fires in thousands, and the...
An environmentalist wants to determine the
relationship between the number of fires in thousands, and the
number of acres burned in hundreds of thousands. Based on the data,
decide in the correlation is significant at alpha = 0.05.
Number of fires (x) - 73 | 74 | 58 | 48 | 80 | 65 | 54
| 49
Number of acres burned (y) - 64 | 46 | 22 | 23 | 51 |
12 | 29 | 10
Find...
North Dakota Electric Company estimates its demand trend line (in millions of kilowatt hours) to be: D = 77.0 + 0.45Q,
North Dakota Electric Company estimates its demand trend line (in millions of kilowatt hours) to be: D = 77.0 + 0.45Q,where Q refers to the sequential quarter number and Q=1 for winter of Year 1. In addition, the multiplicative seasonal factors are as follows:QuarterFactor (Index)Winter0.72Spring1.25Summer1.45Fall0.58In year 26 (quarters 101-104), the energy use for each of the quarters beginning with winter is (round your response to one decimal place):QuarterEnergy UseWinterSpringSummerFall
A marketing professor at Givens College is interested in the relationship between hours spent studying and...
A marketing professor at Givens College is interested in
the relationship between hours spent studying and total points
earned in a course. Data collected on 10 students who took the
course last quarter are in file
HoursPts.xlsx.
Hours
Points
45
40
30
35
90
75
60
65
105
90
65
50
90
90
80
80
55
45
75
65
a) Use XLSTAT to create a scatterplot with hours spent studying
on the horizontal axis and total points earned on the...
A statistics instructor wants to examine the relationship between the hours a student spends studying for...
A statistics instructor wants to examine the relationship
between the hours a student spends studying for the final exam
(Hours) and a student's grade on the final exam (Grade). She takes
a sample of five students.
Student
x (Hours)
y (Grade)
1
8
75
2
2
47
3
3
50
4
15
88
5
25
93
a. Computer the Average and Standard Deviation for x and y USING
EXCEL.
b. Computer the sample covariance for x & y USING EXCEL...
A marketing professor at Givens College is interested in the relationship between hours spent studying and...
A marketing professor at Givens College is interested in the
relationship between hours spent studying and total points earned
in a course. Data collected on 10 students who took the course last
quarter follow.
Hours
Spent Studying
Total
Points Earned
45
40
30
35
90
75
60
65
105
90
65
50
90
90
80
80
55
45
75
65
(a)
Develop an estimated regression equation showing how total
points earned can be predicted from hours spent studying. (Round
your...
3.28. Adam is studying the relationship between hours of sleep and students GPA's. He passes a...
3.28. Adam is studying the relationship between hours of sleep
and students GPA's. He passes a survey amongst his 17 students and
the data he gathered is as follows
GPA avg
Hours of sleep per night
3.87
5
2.50
8
2.98
10
3.37
6
3.1
5
3.1
4
3.9
7
3.5
8
2.1
5
3.97
6
3.6
10
3.45
6
2.1
5
0.0
9
3.2
11
3.18
6
3.87
4
A.) Find the frequency distribution(S)
B.) Descriptive statistics (mean, medium,...
A scientist is interested in the relationship between the number of hours that bears spend sleeping...
A scientist is interested in the relationship between
the number of hours that bears spend sleeping in the week before
they wake up, and the food they received on that hunt. Data was
collected for four bears.
Hours of sleep
Food received
1
76
2
85
3
64
5
70
You are to perform a statistical analysis for the
scientist.
a. Note which variable is the independent, and which is
the dependent variable.
b. Compute the least squares estimated regression...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- The files SpeedControl.java and SpeedControlPanel.java contain a program (and its associated panel) with a circle that...
- Calculate the ideal age of a spouse. Enter either m or f from the keyboard in...
- Due to a recession, expected inflation this year is only 4.75%. However, the inflation rate in...
- What are the benefits of doing a pilot program before a full scale rollout of a...
- It is a calm summer day in southeast Iowa at the Ottumwa air traffic control radar...
- 1. Write a detailed article on Evolution of attacks on the internet & web [your article...
- Analyze the role of the contingency plan coordinator (CPC) in the scope of preparing a BIA....
ADVERTISEMENT