a) Is the dealer's mean significantly greater than the national average of 30,537 miles for 2-year leases? Using the 10 percent level of significance, choose the appropriate hypothesis. H0: μ ≤ 30,537 miles vs. H1: μ > 30,537 miles, reject H0 if tcalc > 1.3250 H0: μ ≥ 30,537 miles vs. H1: μ > 30,537 miles, reject H0 if tcalc > 1.3250 H0: μ ≤ 30,537 miles vs. H1: μ < 30,537 miles, reject H0 if tcalc > 1.3250 H1: μ ≤ 30,537 miles vs. H0: μ > 30,537 miles, reject H0 if tcalc > 1.3250 c a d b (b) Calculate the test statistic. (Round your answer to 2 decimal places.) Test statistic (c) The dealer's cars show a significantly greater mean number of miles than the national average at the 10 percent level. Yes No
a) Is the dealer's mean significantly greater than the national average of 30,537 miles for 2-year leases? Using the 10 percent level of significance, choose the appropriate hypothesis. H0: μ ≤ 30,537 miles vs. H1: μ > 30,537 miles, reject H0 if tcalc > 1.3250 H0: μ ≥ 30,537 miles vs. H1: μ > 30,537 miles, reject H0 if tcalc > 1.3250 H0: μ ≤ 30,537 miles vs. H1: μ < 30,537 miles, reject H0 if tcalc > 1.3250 H1: μ ≤ 30,537 miles vs. H0: μ > 30,537 miles, reject H0 if tcalc > 1.3250 c a d b (b) Calculate the test statistic. (Round your answer to 2 decimal places.) Test statistic (c) The dealer's cars show a significantly greater mean number of miles than the national average at the 10 percent level. Yes No
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
A small dealership leased 21 Suburu Outbacks on 2-year leases. When the cars were returned at the end of the lease, the mileage was recorded (see below).
40,000 | 24,940 | 14,325 | 17,328 | 44,729 | 44,522 | 20,254 |
33,305 | 24,204 | 41,765 | 58,328 | 35,825 | 25,715 | 28,985 |
25,011 | 43,363 | 23,956 | 43,580 | 53,685 | 31,847 | 36,789 |
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(a) Is the dealer's mean significantly greater than the national average of 30,537 miles for 2-year leases? Using the 10 percent level of significance, choose the appropriate hypothesis.
- H0: μ ≤ 30,537 miles vs. H1: μ > 30,537 miles, reject H0 if tcalc > 1.3250
- H0: μ ≥ 30,537 miles vs. H1: μ > 30,537 miles, reject H0 if tcalc > 1.3250
- H0: μ ≤ 30,537 miles vs. H1: μ < 30,537 miles, reject H0 if tcalc > 1.3250
- H1: μ ≤ 30,537 miles vs. H0: μ > 30,537 miles, reject H0 if tcalc > 1.3250
-
c
-
a
-
d
-
b
(b) Calculate the test statistic. (Round your answer to 2 decimal places.)
Test statistic
(c) The dealer's cars show a significantly greater mean number of miles than the national average at the 10 percent level.
-
Yes
-
No
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