Mathematics, 28.11.2019 07:31, soliseric879
You wish to examine whether hot air hand blowers or paper in a medical facility have an effect on the rate of respiratory incidence. you follow 98 health care workers in primary care clinic during flu season. you observe the following incidence of respiratory disease and preferred method of hand drying. 46 workers preferred paper for hand drying, 52 preferred hot air blowers. during the study period 29 of the 98 workers experienced a respiratory illness.
observed values sick not sick
paper 19 27 49
hotair 10 42 52
29 68 98
your null and alternative hypothesis for the chi square test comparing the exposure (air vs paper) and outcome (ill or not ill is hnull there is no association between the drying choice and ilness halt there is an association between drying choice and illness
a. true
b. false
Answers: 2
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