A psychic in Jackson Square, New Orleans claims she can correctly predict future events 90% of the time (The errors are, of course, because the Fates are mysterious and the future is clouded by indecision). In order to test this claim we obtain 15 predictions, if at least 12 of them are correct we will accept that she is psychic. We can calculate the probability of committing Type 1 error with the binomial distribution, assuming p = .9 , to show that [ Select ] The probability of committing Type 2 error, using the binomial distribution and assuming p = .5 , is B =

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