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 21 similar vehicles has a mean price of $20,520 and a standard deviation of $1965. Is there enough evidence to reject the claim at a = 0.01? 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 H₂? OA. Ho: H=$20,000 H₂: μ>$20,000 C... D. Ho: H=$20,000 Ha: μ#$20,000 B. Ho: μ≥ $20,000 Ha: μ< $20,000 OE. Ho: μ>$20,000 Ha: ≤ $20,000 (b) Find the critical value(s) and identify the rejection region(s). What is (are) the critical value(s), to? C. Ho: μ#$20,000 Ha: μ = $20,000 OF. Ho: H=$20,000 Ha: μ< $20,000 to = 0 (Use a comma to separate answers as needed. Round to three decimal places as needed.)
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 21 similar vehicles has a mean price of $20,520 and a standard deviation of $1965. Is there enough evidence to reject the claim at a = 0.01? 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 H₂? OA. Ho: H=$20,000 H₂: μ>$20,000 C... D. Ho: H=$20,000 Ha: μ#$20,000 B. Ho: μ≥ $20,000 Ha: μ< $20,000 OE. Ho: μ>$20,000 Ha: ≤ $20,000 (b) Find the critical value(s) and identify the rejection region(s). What is (are) the critical value(s), to? C. Ho: μ#$20,000 Ha: μ = $20,000 OF. Ho: H=$20,000 Ha: μ< $20,000 to = 0 (Use a comma to separate answers as needed. Round to three decimal places as needed.)
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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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 21 similar vehicles has a mean price of $20,520 and a standard deviation of
$1965. Is there enough evidence to reject the claim at a = 0.01? Complete parts (a) through (e) below. Assume the
population is normally distributed.
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