The proportion of residents in Phoenix favoring the building of toll roads to complete
Chapter 9, Problem 9-18(choose chapter or problem)
The proportion of residents in Phoenix favoring the building of toll roads to complete the freeway system is believed to be p 0.3. If a random sample of 10 residents shows that 1 or fewer favor this proposal, we will conclude that p 0.3. (a) Find the probability of type I error if the true proportion is p 0.3. (b) Find the probability of committing a type II error with this procedure if p 0.2. (c) What is the power of this procedure if the true proportion is p 0.2?
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