(a) What is the probability of making a type I error?
Type I error = the probability of reject true null hypothesis = 5% (if significant level = 5%)
[regardless of how much the percentage of actual proportion of red marbles]
(b) What is the probability of making a type II error?
Type II error = the probability of failure to reject false null hypothesis = 1- power of the test >>> but I forgot what's the figure is ^_^
(c) What is the power of the test?
The probability of not making a type II error = (1-Type II error).
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