Chapter 85.Toyota Motor Corporation developed the Scion car model to appeal to young consumers. Toyota claims theaveragaverage age of the drivers was found to be 27.5 years. Assume the standarddrivers is 2.3 years.e age of a Scion driver is 26 years old. Suppose a random sample of 18 Scion drivers was drawn, and thedeviation for the age of ScionqsdoConstruct a 95% confidence interval to estimate the average age of a Scion driver.Does this result lend support to Toyota's claim?What assumption needs to be made for this procedure?a.b.c.The US air traffic control system handled an average of 47,529 flights during 30 randomly selected days, Thestandard deviation for this sample is 6,210 flights per day.6.t a 99% confidence interval to estimate the average number of flights per day handled by thea. Construcsystem.tem can safely handle 50,000flights per day. What conclusion can be drawn withb. Suppose the current systhese results?What assumptions need to be made about this population?c.The US Department of Education reported that in 2007, 67% of studewithin 12 months of graduating from high school. In 2013, a random samplfrom high school 12 months prior was secollege or a trade school.nts enrolled in college or a trade schoole of 160 individuals who graduatedlected. From this sample, 102 students were found to be enrolled in7.estimate the actual proportion of students enrolled in colleConstruct a 90% confidence interval totrade school withge or ain 12 months of graduating from high school in 2013.n of error for this sample?a.idence that this proportion has changed since 2007?

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Asked May 2, 2019

Number 5 Please Explain TI84 Use if applicable

Chapter 8
5.
Toyota Motor Corporation developed the Scion car model to appeal to young consumers. Toyota claims the
averag
average age of the drivers was found to be 27.5 years. Assume the standard
drivers is 2.3 years.
e age of a Scion driver is 26 years old. Suppose a random sample of 18 Scion drivers was drawn, and the
deviation for the age of Scion
qsdo
Construct a 95% confidence interval to estimate the average age of a Scion driver.
Does this result lend support to Toyota's claim?
What assumption needs to be made for this procedure?
a.
b.
c.
The US air traffic control system handled an average of 47,529 flights during 30 randomly selected days, The
standard deviation for this sample is 6,210 flights per day.
6.
t a 99% confidence interval to estimate the average number of flights per day handled by the
a. Con
struc
system.
tem can safely handle 50,000flights per day. What conclusion can be drawn with
b. Suppose the current sys
these results?
What assumptions need to be made about this population?
c.
The US Department of Education reported that in 2007, 67% of stude
within 12 months of graduating from high school. In 2013, a random sampl
from high school 12 months prior was se
college or a trade school.
nts enrolled in college or a trade school
e of 160 individuals who graduated
lected. From this sample, 102 students were found to be enrolled in
7.
estimate the actual proportion of students enrolled in colle
Construct a 90% confidence interval to
trade school with
ge or a
in 12 months of graduating from high school in 2013.
n of error for this sample?
a.
idence that this proportion has changed since 2007?
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Chapter 8 5. Toyota Motor Corporation developed the Scion car model to appeal to young consumers. Toyota claims the averag average age of the drivers was found to be 27.5 years. Assume the standard drivers is 2.3 years. e age of a Scion driver is 26 years old. Suppose a random sample of 18 Scion drivers was drawn, and the deviation for the age of Scion qsdo Construct a 95% confidence interval to estimate the average age of a Scion driver. Does this result lend support to Toyota's claim? What assumption needs to be made for this procedure? a. b. c. The US air traffic control system handled an average of 47,529 flights during 30 randomly selected days, The standard deviation for this sample is 6,210 flights per day. 6. t a 99% confidence interval to estimate the average number of flights per day handled by the a. Con struc system. tem can safely handle 50,000flights per day. What conclusion can be drawn with b. Suppose the current sys these results? What assumptions need to be made about this population? c. The US Department of Education reported that in 2007, 67% of stude within 12 months of graduating from high school. In 2013, a random sampl from high school 12 months prior was se college or a trade school. nts enrolled in college or a trade school e of 160 individuals who graduated lected. From this sample, 102 students were found to be enrolled in 7. estimate the actual proportion of students enrolled in colle Construct a 90% confidence interval to trade school with ge or a in 12 months of graduating from high school in 2013. n of error for this sample? a. idence that this proportion has changed since 2007?

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Step 1

In this question,

It has been given that, a claim has been made by Toyota company that average age of scion drivers is 26 years old, we have to check whether the claim is right or not by calculating the confidence interval.

We have the sample data of 18 scion drivers, average age of drivers is 27.5 years and standard deviation is 2.3 years.  

Step 2

Part  A) .

Here we have calculated the confidence interval, calculation has shown on whiteboard.

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Step 3

B) Does this result lend support to Toyota’s claim?

No, the result does not support the claim made by Toyota, because as per claim average age is ...

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