PROBLEM 6E
To determine whether the bacteria count was lower in the west basin of Lake Macatawa than in the east basin, n = 37 samples of water were taken from the west basin and the number of bacteria colonies in 100 milliliters of water was counted. The sample characteristics were and s = 11.80, measured in hundreds of colonies. Find an approximate 95% confidence interval for the mean number of colonies (say, μW) in 100 milliliters of water in the west basin.
SPHG Week 7 Epidemiology “More than Money and Hardware: Water and Sanitation for Health in the Developing World” Professor of the Practice, Department of Environmental Science & Pete Kolsky,PhD Engineering WaSH (Water and Sanitation health) Water and Sanition mean Drinking and domestic water supply Safemanagement of human extracta (wasteand where it goes) Health consequences of poor WaSH -Fecal-oral disease -Diarrhoeal disease -800K deaths/year from diarrhea (4 jumbo jet crashes/day) -Onebillion cases/year -4.3% of burde of diseaseDALYs (days addedto living ) -58% attributable to inadequate WaSH Dangerous chemicals- Arsenic-skin lesions,20-60