Question

Suppose your car gets 26 miles per gallon of gasoline, and you are driving at 50 miles per hour. Using unit analyses find the number of hours it takes to use 1 gallon of gas

Answer #1

The mean gas mileage for a hybrid car is 56 miles per gallon.
Suppose that the gasoline mileage is approximately normally
distributed with a standard deviation of
3.3 miles per gallon.
(a) What proportion of hybrids gets over 61 miles per
gallon?
(b) What proportion of hybrids gets 52 miles per gallon or
less?
(c) What proportion of hybrids gets between 59 and 62 miles per
gallon?
(d) What is the probability that a randomly selected hybrid gets
less than...

Suppose that you are interested in estimating the average number
of miles per gallon of gasoline your car can get. You calculate the
miles per gallon for each of the next ten times you fill the tank.
Suppose that in truth, the values for your car are bell-shaped,
with a mean of 25 miles per gallon and a standard deviation of 1.
Find the possible sample means you are likely to get based on your
sample of ten observations. Consider...

Suppose you buy a new car whose advertised mileage is 23 miles
per gallon (mpg). After driving your car for several months, you
find that its mileage is 18.5 mpg. You telephone the manufacturer
and learn that the standard deviation of gas mileages for all cars
of the model you bought is 1.24 mpg.
a. Find the z-score for the gas mileage of your car, assuming
the advertised claim is correct.
b. Does it appear that your car is getting...

A department of transportation’s study on driving speed and
miles per gallon for midsize automobiles resulted in the following
data:
Speed (Miles per Hour)Miles per Gallon: 30 51 39 55 30
24 61 24 50 56
Miles per Gallon: 29 25 25 23 31 33 20 35 26
24
Compute the sample correlation coefficient (to 2 decimals and
enter negative value as negative number).
What can you conclude, based on your computation of the sample
correlation coefficient?

For speeds between 40 mph and 65 mph, a diesel truck gets
460x460x miles per gallon when driven at a constant speed of xx
miles per hour. Diesel gasoline costs 4 dollars per gallon. The
driver is paid 22 dollars per hour.
A) What is the total cost to have the truck driven
100 miles at a constant speed of 60 miles per hour?
dollars.
B) What is the best constant speed to drive the
truck to minimize the total...

Ahmadi, Inc. has been manufacturing small automobiles that have
averaged 50 miles per gallon of gasoline in highway driving. The
company has developed a more efficient engine for its small cars
and now advertises that its new small cars average more than 50
miles per gallon in highway driving. An independent testing service
road-tested 64 of the automobiles. The sample showed an average of
51.5 miles per gallon with a standard deviation of 4 miles per
gallon.
a.
Formulate the...

1) While driving your rental car on your trip to Europe, you
find that you are getting 8.1 kilometers per liter of gasoline.
What does this correspond to in miles per gallon?
2) Carry out the following conversions from one metric unit of
mass to another.
a) 69.3 dg to milligrams
b) 0.167 cg to kilograms
c) 42.9 kg to milligrams
d) 0.627 μg to centigrams

Suppose your car uses 410 gallons of gasoline per year, with
each gallon producing 1.4×108 J of energy. Part A:If you
had a fusion-powered car using the reaction 2H+3H?1n+4He,
what mass of 2Hwould be required instead of that 410 gal of
gasoline? Part B:What mass of 3H would be required instead of that
410 gal of gasoline?

A car has a gas mileage listing of 28 miles per gallon. You take
the car out on 56 trips and find the average gas mileage to be 25
with a standard deviation of 6 mpg.
a) At the .01 level is the car getting gas mileage less than
expected? (p = 0)
b) True or false: natural variability is the reason for the
change in gas mileage
Answer:

Are you thinking of bypassing a gasoline-fueled car in favor of
a hybrid (gasoline and electric) automobile? Let's take a look
at the relative economics of your possible choice. Let's say the
gasoline-fueled car sells for $21,000 and gets 2525 miles per
gallon (mpg) of fuel, while the competing hybrid car sells for
24,000 and averages 31.931.9mpg. The expected resale value of the
hybrid car is $8,400 and that of the gasoline-only car is
$6,900after five years of anticipated ownership....

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