SOLUTION: The federal government states that 79% of Canadians are in favour of Canada's ratifying the Kyoto Accord. If this is the true proportion of Albertans favouring ratification, (Input

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Question 1051405: The federal government states that 79% of Canadians are in favour of Canada's ratifying the Kyoto Accord. If this is the true proportion of Albertans favouring ratification, (Input answers to four decimal places)
(a) what is the probability that, in a random sample of 40 Albertans, exactly 24 would support ratification?

(b) what is the probability that at least 24 but no more than 34 would support ratification?


(c) what is the expected number in a sample of 40 Albertans who would oppose
ratification
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
a. 24/40= .6 in favor
z(0.6) = (0.6-0.79)/sqrt[0.79*0.21/40] = -.19/.0644 = -2.95
p-value = P(z ≤ -2.95) = .0016
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b. 34/40 = .85
z(0.6) = (0.85-0.79)/sqrt[0.79*0.21/40] = .06/.0644 = .9317
P(z ≤ .9317) = .7327
p-value = P( -2.95 ≤ z ≤ .9317) = .8243 - .0016 = .8227 0r 82.27%
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c. 40(.0016)= .064 none in favor
40 opposed