A used car dealer says that the mean price of a three-year-old sports utility vehicle is $19,000. You suspect this claim is incorrect and find that a random sample of 21 similar vehícles has a mean price of $19,566 and a standard deviation of $1909. Is there enough evidence to reject the claim at a=0.017 Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and H Which of the following correctly states Ho and H,? OC. Ho: u=$19,000 Hp> $19,000 OF. Ho: p$19.000 Hp=$19,000 O A. Ho: u>$19,000 Hus$19,000 O B. Ho: =$19,000 H<$19,000 O D. Ho: 2$19,000 Hu<$19,000 O E. Ho: u=$19,000 Hr$19,000 (b) Find the critical value(s) and identify the rejection region(s). What is(are) the critical value(s), to? 6-0 (Use a comma to separate answers as needed. Round to three decimal places as needed.) Determine the rejection region(s). Select the correct choice below and fill in (Round to three decimal places as needed.) answer box(es) within your choice. OB. t and t> O A. t< O D. 1P OC.

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
icon
Related questions
Question
A used car dealer says that the mean price of a three-year-old sports utility vehicle is $19,000. You suspect this claim is incorrect and find that a random sample of 21 similar vehícles has a mean price of $19,566 and a standard deviation of
$1909. 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 H..
Which of the following correctly states Ho and H,?
O A. Ho: H>$19,000
H: us$19,000
O B. Ho: H=$19,000
Hp<$19,000
OC. Ho: =$19,000
Hp>$19,000
O D. Ho: µ2$19,000
Hu<$19,000
O E. Ha: u= $19,000
Hu#$19,000
OF. Ho: u$19,000
Hu= $19,000
(b) Find the critical value(s) and identify the rejection region(s)
What is(are) the critical value(s), to?
(Use a comma to separate answers as needed. Round to three decimal places as needed.)
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.)
O A. t<
OB. t<
and t>
O D. 1>
Oc.
<t<
(c) Find the standardized test statistic t.
t=| |(Round to two decimal olaces as needed.)
Transcribed Image Text:A used car dealer says that the mean price of a three-year-old sports utility vehicle is $19,000. You suspect this claim is incorrect and find that a random sample of 21 similar vehícles has a mean price of $19,566 and a standard deviation of $1909. 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 H.. Which of the following correctly states Ho and H,? O A. Ho: H>$19,000 H: us$19,000 O B. Ho: H=$19,000 Hp<$19,000 OC. Ho: =$19,000 Hp>$19,000 O D. Ho: µ2$19,000 Hu<$19,000 O E. Ha: u= $19,000 Hu#$19,000 OF. Ho: u$19,000 Hu= $19,000 (b) Find the critical value(s) and identify the rejection region(s) What is(are) the critical value(s), to? (Use a comma to separate answers as needed. Round to three decimal places as needed.) 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.) O A. t< OB. t< and t> O D. 1> Oc. <t< (c) Find the standardized test statistic t. t=| |(Round to two decimal olaces as needed.)
A used car dealer says that the mean price of a three-year-old sports utility vehicle is $19,000. You suspect this claim is incorrect and find that a random sample of 21 similar vehicles has a mean price of $19,566 and a standard deviation of
$1909. Is there enough evidence to reject the claim at a = 0.01? Complete parts (a) through (e) below. Assume the population is normally distributed.
(Rouna to uree oecTIai piaces as neeuea.)
O A. t<
O B
t< and t>
Oc. <t<
OD. >
(c) Find the standardized test statistic t.
t= (Round to two decimal places as needed.)
(d) Decide whether to reject or fail to reject the null hypothesis.
O A. Reject Ho because the test statistic is not in the rejection region(s).
O B. Fail to reject Ho because the test statistic is in the rejection region(s).
O C. Fail to reject Ho because the test statistic is not in the rejection region(s).
O D. Reject Ho because the test statistic is in the rejection region(s).
(e) Interpret the decision in the context of the original claim.
O A. At the 1% level of significance, there is sufficient evidence to reject the claim that the mean price is $19,000.
O B. At the 1% level of significance, there is not sufficient evidence to reject the claim that the mean price is not $19,000.
O C. At the 1% level of significance, there is sufficient evidence to reject the claim that the mean price is not $19,000.
O D. At the 1% level of significance, there is not sufficient evidence to reject the claim that the mean price is $19,000.
Transcribed Image Text:A used car dealer says that the mean price of a three-year-old sports utility vehicle is $19,000. You suspect this claim is incorrect and find that a random sample of 21 similar vehicles has a mean price of $19,566 and a standard deviation of $1909. Is there enough evidence to reject the claim at a = 0.01? Complete parts (a) through (e) below. Assume the population is normally distributed. (Rouna to uree oecTIai piaces as neeuea.) O A. t< O B t< and t> Oc. <t< OD. > (c) Find the standardized test statistic t. t= (Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. O A. Reject Ho because the test statistic is not in the rejection region(s). O B. Fail to reject Ho because the test statistic is in the rejection region(s). O C. Fail to reject Ho because the test statistic is not in the rejection region(s). O D. Reject Ho because the test statistic is in the rejection region(s). (e) Interpret the decision in the context of the original claim. O A. At the 1% level of significance, there is sufficient evidence to reject the claim that the mean price is $19,000. O B. At the 1% level of significance, there is not sufficient evidence to reject the claim that the mean price is not $19,000. O C. At the 1% level of significance, there is sufficient evidence to reject the claim that the mean price is not $19,000. O D. At the 1% level of significance, there is not sufficient evidence to reject the claim that the mean price is $19,000.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill