A used 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 23 similar vehicles has a mean price of $21,702 and a standard deviation of $1976. Is there enough evidence to reject the claim at a = 0.10? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify H0 and H1 Determine the degrees of freedom d.f. Find the standardized test statistic t. Determine the sample mean and standard deviation. Decide whether to reject or fail to reject the null hypothesis. Interpret the decision in the context of the original claim.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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A used 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 23 similar vehicles has a mean price of $21,702 and a standard deviation of $1976. Is there enough evidence to reject the claim at a = 0.10? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify H0 and H1 Determine the degrees of freedom d.f. Find the standardized test statistic t. Determine the sample mean and standard deviation. Decide whether to reject or fail to reject the null hypothesis. Interpret the decision in the context of the original claim.
A used 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 23 similar vehicles has a mean price of $21,702 and a standard deviation of $1976. Is there enough evid
to reject the claim at a = 0.10? Complete parts (a) through (e) below. Assume the population is normally distributed.
(a) Write the claim mathematically and identify Ho and H₂-
Which of the following correctly states Ho and H₂?
OA. Ho: H=$21,000
H₂:μ*$21,000
OD. Ho: >$21,000
H₂: us$21,000
OB. Ho: μ#$21,000
H₂:μ=$21,000
O E. Ho: μZ $21,000
H₂:μ<$21,000
OC. Ho: $21,000
H₂:μ<$21,000
OF. Ho: H=$21,000
Hg:p>$21.000
Transcribed Image Text:A used 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 23 similar vehicles has a mean price of $21,702 and a standard deviation of $1976. Is there enough evid to reject the claim at a = 0.10? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and H₂- Which of the following correctly states Ho and H₂? OA. Ho: H=$21,000 H₂:μ*$21,000 OD. Ho: >$21,000 H₂: us$21,000 OB. Ho: μ#$21,000 H₂:μ=$21,000 O E. Ho: μZ $21,000 H₂:μ<$21,000 OC. Ho: $21,000 H₂:μ<$21,000 OF. Ho: H=$21,000 Hg:p>$21.000
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