Researchers at the Mayo Clinic found a significant associationbetween hospital sound levels and patient healing (louder hospitalsound level is associated with slower healing). Based on thesefindings, a new hospital installed a new flooring that is supposedto reduce the noise level in hospital corridors. Using α = 0.01,did the variance of noise level decrease? (use both methods)Problem 4: Mayors of nine communities started a watch program toreduce vandalism. The number of vandalism incidents before andafter starting the watch program was collected for each community.Does the data collected show that the watch program was effective?(use both methods)
| Sound Level in Decibels of Two Flooring Types (n =5 mesurements) |
| | | |
| New Flooring | Old Flooring | | |
| 42 | 48 | | |
| 41 | 51 | | |
| 40 | 44 | | |
| 37 | 48 | | |
| 44 | 52 | | |
Mayors of nine communities started a watch program to reducevandalism. The number of vandalism incidents before and afterstarting the watch program was collected for each community. Doesthe data collected show that the watch program was effective? (useboth methods)
| Number of Vandalisms Before and After Watch Program(n = 9) |
| | | | | |
| City | Before | After | | | |
| 1 | 12 | 8 | | | |
| 2 | 6 | 3 | | | |
| 3 | 8 | 7 | | | |
| 4 | 1 | 0 | | | |
| 5 | 2 | 4 | | | |
| 6 | 4 | 0 | | | |
| 7 | 4 | 4 | | | |
| 8 | 3 | 4 | | | |
| 9 | 3 | 0 | | | |
using excel
