Question
In: Statistics and Probability
The average gas mileage of a certain model car is 28.0 miles per gallon. If the...
The average gas mileage of a certain model car is 28.0 miles per gallon. If the gas mileages are normally distributed with a standard deviation of 0.4 miles per gallon, find the probability that a car has a gas mileage of between 26.8 and 27.2 miles per gallon. In addition to the answer, please write out your steps and thoughts that led you to your answer.
Solutions
we
find this probabilities using normal table
orchestra answered 2 years agoRelated Solutions
The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the...
The mean gas mileage for a hybrid car is 57 miles per gallon.
Suppose that the gasoline mileage is approximately normally
distributed with a standard deviation of 3.5 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...
The mean gas mileage for a hybrid car is 56 miles per gallon. Suppose that the...
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 3.2 miles per gallon. (a)
What proportion of hybrids gets over 61 miles per gallon? (b) What
proportion of hybrids gets 51 miles per gallon or less? left
parenthesis c right parenthesis What proportion of hybrids gets
between 59 and 61 miles per gallon? (d) What is the probability
that a randomly selected...
the mean gas mileage for hybrid car is 56 miles per gallon. suppose that the gasoline...
the
mean gas mileage for 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 high risk it's over 62 miles per gallon b) what
proportion of hybrids gets 50 miles per gallon or less c) what
proportion of hybrids gets between 59 and 61 miles per gallon d)
what is the probability that a randomly selected hybrid gets less
than...
he mean gas mileage for a hybrid car is 5656 miles per gallon. Suppose that the...
he mean gas mileage for a hybrid car is
5656
miles per gallon. Suppose that the gasoline mileage is
approximately normally distributed with a standard deviation of
3.23.2
miles per gallon. (a) What proportion of hybrids gets over
6161
miles per gallon? (b) What proportion of hybrids gets
5151
miles per gallon or less?
left parenthesis c right parenthesis What(c) What
proportion of hybrids gets between
5959
and
6161
miles per gallon? (d) What is the probability that a randomly...
Currently, a manager is using a regression model that predicts gas mileage (in miles per gallon)...
Currently, a manager is using a regression model that predicts
gas mileage (in miles per gallon) based on the horsepower of a
car and the car's weight (in pounds). She believes that the
effect of HP on gas milage is affected by the weight and vice
versa. Develop a regression model that includes horsepower,
weight, and this new interaction effect to predict gas mileage.
Complete parts (a) and (b).
MPG- 15.3,19.5,20.8,18.9,17.2,27.5,44.4,27.2,28.3,21.1
Horsepower-187,101,143,171,166,72,70,89,87,134
Weight-4757,3537,3227,4448,4296,3191,2106,2490,2605,3871
a. At the 0.01level of significance, is...
According to Energy Information the average gas mileage of all automobiles is 21.4 miles per gallon....
According to Energy Information the average gas mileage of all
automobiles is 21.4 miles per gallon. For a random sample of 40
sport utility vehicles, the mean gas mileage is 19.8 miles per
gallon with a standard deviation of 3.5 miles per gallon. Test the
claim that the mean mileage of all SUVs is different than the gas
mileage of all automobiles.
a) z = 2.89 and a p value of .9938 .9938 < 0.05 There is not
sufficient evidence...
Suppose gas costs $3 a gallon and the average car gets 28 miles per gallon. If...
Suppose gas costs $3 a gallon and the average car gets 28 miles
per gallon. If Congress mandates that cars have to get 36 miles per
gallon, by what percentage will this lower the costs of driving? If
the elasticity of total miles driven (per year) with respect to the
cost of driving is –1, by how much will total miles driven per year
increase, assuming it is 10,000 miles at the beginning? How much
will total annual gas consumption...
Suppose gas costs $3 a gallon and the average car gets 28 miles per gallon. If...
Suppose gas costs $3 a gallon and the average car gets
28 miles per gallon. If Congress mandates that cars have to get 36
miles per gallon, by what percentage will this lower the costs of
driving? If the elasticity of total miles driven (per year) with
respect to the cost of driving is –1, by how much will total miles
driven per year increase, assuming it is 10,000 miles at the
beginning? How much will total annual gas consumption...
Below is a list of gas mileage ratings for selected passenger cars in miles per gallon....
Below is a list of gas mileage ratings for selected passenger
cars in miles per gallon.
16.2 20.3 31.5 30.5 21.5 31.9 37.3 27.5 27.2 34.1 35.1 29.5 31.8
22.0 17.0 21.6
Find the mean, standard deviation, five - number summary, IQR,
and identify any outliers. Use the five - number summary to sketch
a boxplot. What does the boxplot tell you about the distribution of
the data? (20 points)
The corporate average fuel economy (CAFE) standard for mileage is currently 28 miles per gallon of...
The corporate average fuel economy (CAFE) standard for mileage
is currently 28 miles per gallon of gasoline (the defender) for
passenger cars. To conserve fuel and reduce air pollution, suppose
the U.S. Congress sets the CAFE standard at 35 miles per
gallon(the challenger) in 2010. An auto will emit on average 0.8
pounds of carbon dioxide (CO2) per mile driven at 28 miles per
gallon, and it will emit 0.7 pounds of O2 per mile driven at 35
miles per...
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