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A hospital would like to determine whether there is a relationship between the level of satisfaction of workers with working conditions and their job category. A random sample of 250 employees was surveyed. The results are summarized in the table below.

	Nurses	Support Staff	Doctors	Total
Satisfactory	40	80	20	140
Indifferent	20	40	20	80
Poor	15	5	10	30
Total	75	125	50	250

i. Find a 98% confidence interval for the true proportion of all workers that are satisfied with working conditions?

ii. Is there sufficient evidence that support staff are more satisfied with working conditions than are nursing staff? Use a level of significancea=.10.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9980965

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