Question
In: Physics
Assume the cost of gasoline is $2.2 per gallon and the cost of electricity is $0.10...
Assume the cost of gasoline is $2.2 per gallon and the cost of electricity is $0.10 per kWh. Gasoline weighs 5.5 lbs per gallon and releases 19,000 Btu of energy per pound. a) Calculate the cost of gasoline and electricity for transportation in terms of dollars per joule. b) Which one is a more costly energy for transportation? (hint: more costly means cost more for the same amounts of energy) c) If gas engines are 25% efficient in energy use (can only use 25% of the total energy from the gasoline) and electric engines are 60% efficient, which is more economical for fuel cost? (hint: more economical means cost less to produce the same amounts of energy)
Solutions
genius_generous answered 2 years agoRelated Solutions
Assume the following data represent the cost of a gallon of gasoline ($) at all the...
Assume the following data represent the cost of a gallon of
gasoline ($) at all the various gas stations around town on a given
day. Take a random sample of size 5 from this population.
2.59 3.01 3.15 2.83 2.79 2.59 2.96 3.05 3.19 3.03 2.65 2.74 2.83
2.69 3.05 3.10 2.89 2.84 2.63 3.11 2.76 2.89 2.90 3.09 3.05 2.71
2.84 2.90 2.75 2.90 2.56 2.89 2.76 2.87 2.92 3.05 3.09 2.57 3.20
2.76
a) Describe the individual, variable,...
Regular gasoline averaged $2.83 per gallon in December 2018. Assume the standard deviation for gasoline prices...
Regular gasoline averaged $2.83 per gallon in December 2018.
Assume the standard deviation for gasoline prices is $0.14 per
gallon. A random sample of 40 service stations was selected.
Complete parts a through d.
a. What is the probability that the sample mean will be less
than $2.84?
The probability that the sample mean will be less than $2.84 is
______
(Type an integer or decimal rounded to four decimal places as
needed.)
b. What is the probability that the...
Oil and Gas Prices The average gasoline price per gallon (in cities) and the cost of...
Oil and Gas Prices The average gasoline price
per gallon (in cities) and the cost of a barrel of oil are shown
below for a random selection of weeks in
2015
.
Oil (
$
)
Gasoline (
$
)
55.78
2.654
41.96
2.269
52.08
2.445
57.28
2.710
58.15
2.805
67.59
3.071
The correlation coefficient for the data is
=r0.978
and
=α0.01
. Should regression analysis be done?
The regression
analysis should not be done.
The regression
analysis should be...
Oil and Gas Prices The average gasoline price per gallon (in cities) and the cost of...
Oil and Gas Prices The average gasoline price per gallon (in
cities) and the cost of a barrel of oil are shown below for a
random selection of weeks in 2015. Oil ($) Gasoline ($) 55.78 2.654
41.96 2.269 52.08 2.445 57.28 2.710 58.15 2.805 67.59 3.071
Oil and Gas Prices The average gasoline price per gallon (in cities) and the cost of...
Oil and Gas Prices The average gasoline price
per gallon (in cities) and the cost of a barrel of oil are shown
below for a random selection of weeks from 2015.
Oil
$47.79
$44.62
$81.08
$43.67
$40.58
$48.64
Gasoline
2.638
2.636
2.944
2.528
2.623
2.682
1) The correlation coefficient for the data is r =
0.951 and a = 0.01. Should regression analysis be
done?
a) The regression analysis should not be done or b) The
regression analysis should be...
At one point the average price of regular unleaded gasoline was $3.543.54 per gallon. Assume that...
At one point the average price of regular unleaded gasoline
was
$3.543.54
per gallon. Assume that the standard deviation price per gallon
is
$0.080.08
per gallon and use Chebyshev's inequality to answer the
following.
(a) What percentage of gasoline stations had prices within
33
standard deviations of the mean?
(b) What percentage of gasoline stations had prices within
2.52.5
standard deviations of the mean? What are the gasoline prices
that are within
2.52.5
standard deviations of the mean?
(c) What...
At one point the average price of regular unleaded gasoline was $3.53 per gallon. Assume that...
At one point the average price of regular unleaded gasoline was
$3.53 per gallon. Assume that the standard deviation price per
gallon is $0.07
per gallon and use Chebyshev's inequality to answer the
following.
(a) What percentage of gasoline stations had prices within 3
standard deviations of the mean?
(b) What percentage of gasoline stations had prices within 2.5
standard deviations of the mean? What are the gasoline prices that
are within 2.5 standard deviations of the mean?
(c) What...
Data on the gasoline tax per gallon (in cents) as of a certain date for the...
Data on the gasoline tax per gallon (in cents) as of a certain
date for the 50 U.S. states and the District of Columbia are shown
below.
State
Gasoline Tax
per Gallon
State
Gasoline Tax
per Gallon
Alabama
20.1
Missouri
17.6
Alaska
8.0
Montana
27.9
Arizona
19.0
Nebraska
27.8
Arkansas
21.9
Nevada
33.3
California
48.4
New
Hampshire
19.4
Colorado
22.0
New
Jersey
14.2
Connecticut
42.4
New
Mexico
18.9
Delaware
23.0
New
York
44.1
District of
Columbia
23.2
North
Carolina
30.5...
The mean price for regular gasoline at the pump was $2.877 per gallon and the standard...
The mean price for regular gasoline at the pump was $2.877 per
gallon and the standard deviation was $0.009 per gallon. A random
sample of size 55 is drawn from this population. What is the
probability that the mean price per gallon is less than $2.876?
A research firm tests the miles-per-gallon characteristics of three brands of gasoline. Because of different gasoline...
A research firm tests the miles-per-gallon characteristics of
three brands of gasoline. Because of different gasoline performance
characteristics in different brands of automobiles, five brands of
automobiles are selected and treated as blocks in the experiment;
that is, each brand of automobile is tested with each type of
gasoline. The results of the experiment (in miles per gallon)
follow.
Gasoline Brands
I
II
III
Automobiles
A
18
21
20
B
24
26
27
C
30
28
34
D
22
25...
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