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Researchers at the Mayo Clinic found a significant association between hospital sound levels and patient healing...

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Statistics

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 FlooringOld Flooring
4248
4151
4044
3748
4452

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)
CityBeforeAfter
1128
263
387
410
524
640
744
834
930

using excel

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