A waterborne nonbacterial gastroenteritis outbreak occurred in Colorado as a result of a long-standing filter deficiency and

Question:

A waterborne nonbacterial gastroenteritis outbreak occurred in Colorado as a result of a long-standing filter deficiency and malfunction of a sewage treatment plant. A study was conducted to determine whether the incidence of gastrointestinal disease during the epidemic was related to water consumption (American Water Works Journal, Jan. 1986). A telephone survey of households yielded the accompanying information on daily consumption of 8-ounce glasses of water for a sample of 40 residents who exhibited gastroenteritis symptoms during the epidemic.


a. Use a 99% confidence interval to estimate the percentage of gastroenteritis cases who drink 1–2 glasses of water per day. 

b. Use a 99% confidence interval to estimate the difference between the percentages of gastroenteritis cases who drink 1–2 and 0 glasses of water per day.
c. Conduct a test to determine whether the incidence of gastrointestinal disease during the epidemic is related to water consumption. Use α = .01.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Statistics For Engineering And The Sciences

ISBN: 9781498728850

6th Edition

Authors: William M. Mendenhall, Terry L. Sincich

Question Posted: