A woman claims that she is a fortune-teller. Specifically, she claims that she can predict the direction
Question:
(1) She predicts at least 8 out of 10 correctly, or
(2) She predicts at least 6 out of 10 correctly on each of four separate occasions? Answer by assuming that (1) she is really guessing and (2) each day the Dow is equally likely to go up or down.
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Related Book For
Data Analysis and Decision Making
ISBN: 978-0538476126
4th edition
Authors: Christian Albright, Wayne Winston, Christopher Zappe
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