A used car dealer says that the mean price of a three-year-old sports utility vehicle is $20,000. You suspect this claim is incorrect and find that a random sample of 24 similar vehicles has a mean price of $20,741 and a standard deviation of $1933. Is there enough evidence to reject the claim at a=0.01? Complete parts (a) through (e) below. Assume the population is normally distributed. Which of the following correctly states Ho and H₂? OA. Ho $20,000 H₂ μ=$20,000 OB. Ho $20,000 H₂ μ<$20,000 OE. Ho: >$20,000 H₂ μ<$20,000 OD. Ho $20,000 H₂ μ<$20,000 (b) Find the critical value(s) and identify the rejection region(s). OC. Ho: $20,000 H₂>$20,000 OF. Ho: u=$20,000 H₂ μ#$20,000
A used car dealer says that the mean price of a three-year-old sports utility vehicle is $20,000. You suspect this claim is incorrect and find that a random sample of 24 similar vehicles has a mean price of $20,741 and a standard deviation of $1933. Is there enough evidence to reject the claim at a=0.01? Complete parts (a) through (e) below. Assume the population is normally distributed. Which of the following correctly states Ho and H₂? OA. Ho $20,000 H₂ μ=$20,000 OB. Ho $20,000 H₂ μ<$20,000 OE. Ho: >$20,000 H₂ μ<$20,000 OD. Ho $20,000 H₂ μ<$20,000 (b) Find the critical value(s) and identify the rejection region(s). OC. Ho: $20,000 H₂>$20,000 OF. Ho: u=$20,000 H₂ μ#$20,000
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Show supporting work for each section
identify the null hypothesis & alternative hypothesis
identify the critical value(s) t0=
identify the rejection region
identify the standardized test statistic t=
decide whether to reject or fail to reject context of or
Transcribed Image Text:A used car dealer says that the mean price of a three-year-old sports utility vehicle is $20,000. You suspect this claim is incorrect and find that a random sample of 24 similar vehicles
has a mean price of $20,741 and a standard deviation of $1933. Is there enough evidence to reject the claim at a=0.01? Complete parts (a) through (e) below. Assume the
population is normally distributed.
Which of the following correctly states Ho and H₂?
OA. Ho u $20,000
H₂μ $20,000
Ha
OD. Ho:p> $20,000
H₂ μ<$20,000
a
B. Hop-$20,000
H₂ μ<$20,000
a
OE. Ho: >$20,000
Ha: p≤ $20,000
(b) Find the critical value(s) and identify the rejection region(s).
What is(are) the critical value(s), to?
200
to
(Use a comma to separate answers as needed. Round to three decimal places as needed.)
OC. Ho: p= $20,000
H₂:μ>$20,000
a
OF. Hop=$20,000
H₂:μ#$20,000
a
Transcribed Image Text:3) Complete all parts:
a. State the null and alternative hypotheses. Make sure you are stating your
hypotheses in terms of the correct variable (u or p). If there is a claim, identify
which hypothesis is the claim by writing CLAIM to the left of it.
Ho:
Ha:
b. Sketch and properly shade the rejection region and label with the correct critical
value. Make sure to clearly label whether your critical value is a za or ta.
c. Calculate the test statistic accurate to three decimal places; show your work
(including the formula you used) and enter your value in the space below
Test Statistic:
d. State the decision, your reasoning for your decision, AND a one-sentence
conclusion.
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What is the rejection region select correct choice & fi
Transcribed Image Text:A used car dealer says that the mean price of a three-year-old sports utility vehicle is $20,000. You suspect this claim is incorrect and find that a random sample of 24 similar vehicles
4
has a mean price of $20,741 and a standard deviation of $1933. Is there enough evidence to reject the claim at α=0.01? Complete parts (a) through (e) below. Assume the
population is normally distributed.
10.
VJES
V
What is (are) the critical value(s), tō ?
4
ON/
***
to = 2.576
(Use a comma to separate answers as needed. Round to three decimal places as needed.)
(c) Find the standardized test statistic t.
Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice.
(Round to three decimal places as needed.)
OA. <t<
OC. t>
OB. t<
OD. t<
and t>
Solution
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