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**This is timed. Don't take longer than 90 min to answer** . _ A used car dealer says that the mean price of a threeyearcld

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**This is timed. Don't take longer than 90 min to answer**

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. _ A used car dealer says that the mean price of a threeyearcld sports utility vehicle is $20,000. You suspect this claim is Questlon IISt I6 incorrect and nd that a random sample of 21 similar vehicles has a mean price of $20,765 and a standard deviation of $1988. Is there enough evidence to reject the claim at 0: = 0.01? Complete parts (a) through (e) below. Assume the population is normally distributed. 0 Question 24 (a) Write the claim mathematically and identify H0 and HE. O Question 25 Which of the following correctly states H0 and He? 0 Question 26 :13: A. H0: p 2 $20,000 :12} B. H0: [.1 = $20,000 -:::::- c. H0: p = $20,000 Ha: p$20,000 c:- 0. H0: p > $20,000 :3: E. H0: 0 $20,000 -:;j;:- F. H0: p = $20,000 0 Question 27 Ha: \"$20,000 Ha: p=$20,000 Ha: p$20,000 (b) Find the critical value(s) and identify the rejection region(s). 0 Question 28 What is(are) the critical value(s), to? '04: 0 Question 29 (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 Question list K incorrect and find that a random sample of 21 similar vehicles has a mean price of $20,765 and a standard deviation of $1988. Is there enough evidence to reject the claim at o = 0.01? Complete parts (a) through (e) below. Assume the population is normally distributed. O Question 24 . . . Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. O Question 25 (Round to three decimal places as needed.) O A. O Question 26 O C. t (c) Find the standardized test statistic t. O Question 27 t=(Round to two decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. Question 28 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 Question 29 O C. Reject Ho because the test statistic is in the rejection region(s). O D. Fail to reject Ho because the test statistic is not in the rejection region(s).(e) Interpret the decision in the context of the original claim. O Question 28 O A. At the 1% level of significance, there is sufficient evidence to reject the claim that the mean price is not $20,000. O Question 29 O B. At the 1% level of significance, there is sufficient evidence to reject the claim that the mean price is $20,000. O C. At the 1% level of significance, there is not sufficient evidence to reject the claim that the mean price is $20,000. O Question 30 O D. At the 1% level of significance, there is not sufficient evidence to reject the claim that the mean price is not $20,000.Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance a, and sample size n. Question list K Left-tailed test, a = 0.025, n = 11 Click the icon to view the t-distribution table. O Question 24 . . . O Question 25 The critical value(s) is/are (Round to the nearest thousandth as needed. Use a comma to separate answers as needed.) Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice. O Question 26 (Round to the nearest thousandth as needed.) O A. t O C. t> O D.

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