Question
In: Statistics and Probability
Energy consumption. The following table presents the average annual energy expenditures (in dollars) for housing units...
Energy consumption. The following table presents the average annual energy expenditures (in dollars) for housing units of various sizes (in square feet).
|
Size |
250 |
750 |
1250 |
1750 |
2250 |
2750 |
3250 |
3750 |
|
Energy Expenditure |
1087 |
1228 |
1583 |
1798 |
1939 |
2138 |
2172 |
2315 |
c.) If two homes differ in size by 250 square feet, by how much would you predict their energy expenditure to differ?
d.) Predict the energy expenditure for a home that is 2000 square feet.
e.) Compute the correlation coefficient. Interpret.
f.) Compute the correlation determination. Interpret.
Solutions
orchestra answered 1 year agoRelated Solutions
Price of eggs and milk: The following table presents the average price in dollars for a...
Price of eggs and milk: The following table
presents the average price in dollars for a dozen eggs and a gallon
of milk for each month from February through November
2001. Use a TI-84 calculator to answer the following.
Dozen Eggs
Gallon of Milk
1.21
2.66
1.13
2.67
1.01
2.69
1.20
2.68
1.15
2.71
1.28
2.67
1.26
2.90
1.33
2.91
1.45
2.94
1.56
2.95
If the price of eggs differs by $0.30 from one month to the
next, by how...
Price of eggs and milk: The following table presents the average price in dollars for a...
Price of eggs and milk: The following table
presents the average price in dollars for a dozen eggs and a gallon
of milk for each month from January through October
2010
.
Dozen Eggs
Gallon of Milk
1.79
3.12
1.77
2.69
1.28
3.76
1.78
2.78
0.88
3.00
0.98
3.08
1.15
3.31
1.05
3.15
1.86
2.94
1.83
2.73
If the price of eggs differs by $0.25 from one month to the
next, by how much would you expect the price of...
The following table presents the average price in dollars for a dozen eggs and a gallon...
The following table
presents the average price in dollars for a dozen eggs and a gallon
of milk for each month in a recent year.
Dozen
Eggs
Gallon of
Milk
1.94
3.58
1.80
3.52
1.77
3.50
1.83
3.47
1.69
3.43
1.67
3.40
1,65
3.43
1.88
3.47
1.89
3.47
1.96
3.52
1.96
3.54
2.01
3.58
If a linear regression
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y-intercept? Please round to 3 decimal places...
Using the following aggregate expenditures table, answer the questions that follow. Income (Y), in $ Consumption...
Using the following aggregate
expenditures table, answer the questions that follow.
Income (Y), in
$
Consumption (C), in
$
Saving (S), in
$
2,200
2,320
−120
2,300
2,380
−80
2,400
2,440
−40
2,500
2,500
0
2,600
2,560
40
2,700
2,620
80
2,800
2,680
120
2,900
2,740
160
3,000
2,800
200
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The table below shows the average annual consumption bundle and prices in 2012 and 2013: Streaming...
The table below shows the average annual consumption bundle and
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Streaming Movies
Popcorn
2012 {quality, price/unit}
{10000 hrs, $1.00/hr}
{5000 bags, $2.00/bag}
2013 {quantity, price/unit}
{12000 hrs, $0.95/hr}
{4000 bags, $2.20/bag}
(a) What is the percentage change in the price of each good?
Calculate the consumer price index (CPI) for 2012 and 2013 using
2012 as the base year. What is the inflation rate in the CPI?
(b) Are all consumers equally affected by the...
6. Enthalpy is a measure of total energy in a thermodynamic system. The following table presents...
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system. The following table presents enthalpy measurements on 16
water based systems. Four measurements are made on each of four
systems which differ by concentration of NaCl (table salt).
Concentration (%)
Enthalpy
5
1.62
1.60
1.62
1.66
10
2.69
2.66
2.72
2.73
20
3.56
3.45
3.65
3.52
30
3.35
3.18
3.40
3.06
What pairs of concentrations, if any, can you conclude to have
differing enthalpies? Use α = 0.05....
The following table presents data on wine consumption (in liters per person per year) and death...
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per person per year) and death rate from heart attacks (in deaths
per 100,000 people per year) in 19 developed Western countries.
Country
Alcohol from Wine
Heart disease Deaths
Australia
2.5
211
Austria
3.9
167
Belgium
2.9
131
Canada
2.4
191
Denmark
2.9
220
Finland
0.8
297
France
9.1
71
Iceland
0.8
211
Ireland
0.7
300
Italy
7.9
107
Netherlands
1.8
167
New Zealand
1.9
266
Norway
0.8
227
Spain...
House prices: The following table presents prices, in thousands of dollars, of single-family homes for 20...
House prices: The following table presents
prices, in thousands of dollars, of single-family homes for 20 of
the 25 largest metropolitan areas in the United States for the
third quarter of 2012 and the third quarter of 2013.
Metro Area
2012
2013
Metro Area
2012
2013
Atlanta, GA
87.8
115.1
Philadelphia, PA
193.5
197.7
Baltimore, MD
218.1
226.5
Phoenix, AZ
129.9
169.0
Boston, MA
311.5
332.2
Portland, OR
208.6
246.5
Chicago, IL
157.2
159.4
Riverside, CA
174.3
216.7
Cincinnati, OH...
Mary developed the following payoff table based on the plan to build housing units. Mary has...
Mary developed the following payoff table based on the plan to
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units, 50 units, and 60 units. The probabilities of strong, fair,
and poor housing market are provided.
Housing Units Good Market Fair Market Poor
Market
30, d1 $50,000 . $20,000 $10,000
50, d2 80,000 30,000 -10,000
60, d3 150,000 35000 -30,000
Probability .5 .3 .2
Question # 1: If Mary wanted to make a decision based on the
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The following table shows a company's annual revenue (in billions of dollars) for 2009 to 2014....
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Year
Period (t)
Revenue ($ billions)
2009
1
23.6
2010
2
29.2
2011
3
37.8
2012
4
50.3
2013
5
59.8
2014
6
66.6
a)
What type of pattern exists in the data?
The time series plot shows an upward curvilinear trend.
The time series plot shows a downward curvilinear trend.
The time series plot shows a downward linear trend.
The time series...
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