A car company says that the mean gas mileage for its luxury sedan is at least 25 miles per gallon (mpg). You be the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 24 mpg and a standard deviation of 2 mpg. At a=0.10, test the company's claim. Assume the population is normally distributed. Click here to view the t-distribution table. Click here to view page 1 of the normal table. Click here to view page 2 of the normal table. Which sampling distribution should be used and why? OA. Use a normal sampling distribution because the population is normal, and o is known. OC. Use a t-sampling distribution because the population is normal, and o is known. OE. Use a normal sampling distribution because n> 30. *** OB. Use a t-sampling distribution because the population is normal, and o is unknown. OD. Use a t-sampling distribution because n < 30. OF. Use a normal sampling distribution because the population is normal, and o is unknown.

A car company says that the mean gas mileage for its luxury sedan is at least 25 miles per gallon (mpg). You be the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 24 mpg and a standard deviation of 2 mpg. At a=0.10, test the company's claim. Assume the population is normally distributed. Click here to view the t-distribution table. Click here to view page 1 of the normal table. Click here to view page 2 of the normal table. Which sampling distribution should be used and why? OA. Use a normal sampling distribution because the population is normal, and o is known. OC. Use a t-sampling distribution because the population is normal, and o is known. OE. Use a normal sampling distribution because n> 30. *** OB. Use a t-sampling distribution because the population is normal, and o is unknown. OD. Use a t-sampling distribution because n < 30. OF. Use a normal sampling distribution because the population is normal, and o is unknown.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

A car company says that the mean gas mileage for its luxury sedan is at least 25 miles per gallon (mpg). You believe
the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 24 mpg and a standard
deviation of 2 mpg. At a=0.10, test the company's claim. Assume the population is normally distributed
Click here to view the t-distribution table.
Click here to view page 1 of the normal table.
Click here to view page 2 of the normal table.
Which sampling distribution should be used and why?
OA. Use a normal sampling distribution because the
population is normal, and o is known.
OC. Use a t-sampling distribution because the
population is normal, and o is known.
OE. Use a normal sampling distribution because
n> 30.
OB. Use a t-sampling distribution because the
population is normal, and o is unknown
OD. Use a t-sampling distribution because n<30.
OF. Use a normal sampling distribution because the
population is normal, and o is unknown.
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Follow-up Question

C. Use a t-sampling distribution because the
population is normal, and o is known.
OE. Use a normal sampling distribution because
n> 30.
State the appropriate hypotheses to test.
IS
OA. Ho: ≤25
Ha u>25
OC. H₂ μ#25
H₂ μ = 25
What is the value of the standardized test statistic?
Get more help -
Q Search
16.
4-
4
The standardized test statistic is (Round to two decimal places as needed)
♫t.
18
90
C
f9
OD. Use a t-sampling distri
KA
OF. Use a normal sampling
population is normal, an
B. Ho: μ ≥25
Ha: μ< 25
OD. Ho: μ = 25
Ha: μ#25
Clear all
f10 ▷ll
O
f11
DDI

Solution

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Follow-up Question

y). You believe the claim is incorrect and find th
random sample of 5 cars has a mean gas mileage of 24 mpg and a standard deviation of 2 mpg. At a = 0.10, test the company's claim. Assume the
population is normally distributed.
Click here to view the t-distribution table.
Click here to view page 1 of the normal table.
Click here to view page 2 of the normal table.
o is known.
OE. Use a normal sampling distribution because n > 30.
State the appropriate hypotheses to test.
OA. Ho: ≤25
H₂ μ25
OC. Ho μ#25
H₂ μ = 25
his Get more help -
A
Tip
P Pearson
OF. Use a normal sampling distribution because the population
is normal, and o is unknown.
OB. Ho: μ ≥ 25
H₂: μ< 25
OD. Ho: μ = 25
H₂: μ#25
Clear all
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