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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Aused car dealer says that the mean price of a three-year-old sports utility vehicle is $21,000. You suspect this claim is incorrect and find that a random sample of 21 similar
vehicles has a mean price of $21,696 and a standard deviation of $1956. Is there enough evidence to reject the claim at a= 0.05? Complete parts (a) through (e) below. Assume
the population is normally distributed.
(a) Write the claim mathematically and identify Ho and Ha.
Which of the following correctly states Ho and H?
O A. Ho: H#$21,000
O B. Ho: H=$21,000
Ha: µ= $21,000
O C. Ho: µ2$21,000
Ha: µ< $21,000
H µ< $21,000
O D. Ho: u= $21,000
O E. Ho: µ> $21,000
Ha us $21,000
F. Ho: H= $21,000
H p#$21,000
Ha µ> $21,000
(b) Find the critical value(s) and identify the rejection region(s).
What is(are) the critical value(s), to?
to = D
(Use a comma to separate answers as needed. Round to three decimal places as needed.)
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Transcribed Image Text:Aused car dealer says that the mean price of a three-year-old sports utility vehicle is $21,000. You suspect this claim is incorrect and find that a random sample of 21 similar vehicles has a mean price of $21,696 and a standard deviation of $1956. Is there enough evidence to reject the claim at a= 0.05? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states Ho and H? O A. Ho: H#$21,000 O B. Ho: H=$21,000 Ha: µ= $21,000 O C. Ho: µ2$21,000 Ha: µ< $21,000 H µ< $21,000 O D. Ho: u= $21,000 O E. Ho: µ> $21,000 Ha us $21,000 F. Ho: H= $21,000 H p#$21,000 Ha µ> $21,000 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? to = D (Use a comma to separate answers as needed. Round to three decimal places as needed.) Clear all Check answer View an example Get more help - Help me solve this P Pearson Copyright © 2021 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy I Permissions I Contact Us / 6:08 PM 72°F 12/9/2021 search
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