BA 3010 CH 5 ( Data Analsis and Deision Making)
Md
chapter_5_homework2.xlsxQ1
| ai) Problem type: |
| ii) Variables given: |
| iii: Variable for which we are to solve: |
| bi) Problem type: |
| ii) Variables given: |
| iii: Variable for which we are to solve: |
| ci) Problem type: |
| ii) Variables given: |
| iii: Variable for which we are to solve: |
| di) Problem type: |
| ii) Variables given: |
| iii: Variable for which we are to solve: |
Q2
| Z-value calculations | |||||
| mean | standard deviation | x | z | ||
| a) | 50 | 7 | 33 | ||
| b) | 50 | 7 | 60 | ||
| c) | 82 | 63 | 172 | ||
| d) | 77 | 32 | 0.3 | ||
| e) | 37 | 12 | 0.3 |
Q3
| Purchase amounts | |
| mean | $25 |
| standard deviation | $8 |
| a) | |
| b) | |
| c) | |
| d) | |
| e) |
Q4
| Number of Trials | 40 |
| Prob. Success in any trial | 25% |
| a) | |
| b) | |
| c) | |
| d) | |
| e) |
Q5
| Bakersfield | San Francisco | |
| Average Home Price | $ 240,000 | $ 620,000 |
| Standard Deviation | $ 75,000 | $ 110,000 |
| Family's Current Home | $420,000 | |
| a) | 99.18% | |
| b) | 3.45% | |
| c) | $ 884,000 | |
| d) | 49.12% | |
| e) | $ 386,997.30 | |
| $ 93,002.70 |
A) This shows that 99.18% of all houses in Bakersfield are worth less than the house the family just sold. In other words, they lived in the 99.18th percentile of all Bakersfield houses.
Q6
| Number in parts in one box | 144 |
| Number of boxes per shipment | 6 |
| Percent of parts defective | 2% |
| a) | 44.85% |
| b) | 34.45% |
| c) | 7.03% |
| d) | 22.58% |
| e) | 16.32% |
| f) | 17.28 |
| 4.12 |
A) There is a 44.85% chance that 2 or fewer defects will be found in any given box.
