Question
Count 53463 54569 57565 63727 75797 81783 87166 97332 119454 131953 137524 144385 139450 131007 133559...
| Count |
| 53463 |
| 54569 |
| 57565 |
| 63727 |
| 75797 |
| 81783 |
| 87166 |
| 97332 |
| 119454 |
| 131953 |
| 137524 |
| 144385 |
| 139450 |
| 131007 |
| 133559 |
| 133096 |
| 138660 |
| 145280 |
| 154118 |
| 167573 |
| 174844 |
| 162567 |
| 164540 |
| 158914 |
| 161319 |
| 177247 |
| 205607 |
| 229634 |
| 265923 |
| 298455 |
| 302224 |
| 315625 |
| 320122 |
| 319305 |
| 308215 |
| 280489 |
| 242476 |
| 228732 |
| 195527 |
| 168490 |
| 182045 |
| 204043 |
| 222374 |
| 241336 |
| 252614 |
| 257553 |
Open US_Crime_HW7 data. Is it reasonable to claim that the average annual number of vehicle theft in California is greater than 155,000?
11. What test/procedure did you perform? (5 points)
- a. One-sided t-test
- b. Two sided t-test
- c. Regression
- d. Confidence Interval
12. Why did you choose this test/procedure? Because… (5 points)
- a. We are checking if years and number of vehicle theft in California are related.
- b. We are checking if two averages are significantly different.
- c. We are checking if the average of one variable is larger than the average of the other variable.
- d. We are comparing the average number of vehicle theft in California with a specific number.
13. What is the P-value/margin of error? (5 points)
- a. 76925.68
- b. 180167
- c. 22844.11
- d. None of these
14. What is the Statistical interpretation? (5 points)
- a. The P-value is much greater than 5% thus the test result is inconclusive.
- b. The P-value is much greater than 5% thus we need more data.
- c. The P-value is greater than 5% thus we cannot claim that the averages are different.
- d. None of these.
15. What is the conclusion? (5 points)
- a. The result is inconclusive thus we cannot conclude anything.
- b. We are confident that the average annual number of vehicle theft in California is greater than 155,000.
- c. We cannot be confident that the average annual number of vehicle theft in California is greater than 155,000.
- d. None of these.
Task 2
Homework Answers
Answer #1
Null and alternative hypothesis:
Ho:
= 155000
Ha:
> 155000
11. Test/procedure : One-sided t-test
Answer A
12. c. We are checking if the average of one variable is larger than the average of the other variable.
Answer C
13. Margin of error, E =
critical two tailed value, tC = T.INV.2T(0.05, 45) = 2.0141
E = tc * standard error = 2.0141*11342.0732 = 22844.11
Answer C
4. Statistical interpretation: p-value = 0.0158
- d. None of these.
Answer D
15. conclusion:
- c. We cannot be confident that the average annual number of vehicle theft in California is greater than 155,000.
Answer C
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