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Unformatted text preview: ← ←- one tailed test: when you have a directional hypothesis • you specify a positive or negative direction • i.e. “Don’t Stop Believing” by Journey makes people happy • i.e. going to the gym helps you lose weight ← ←- Type I errors: when we believe there is an effect in the population but there actually isn’t • alpha level- probability of Type I error = .05 ← ←- Type II errors: when we believe there isn’t an effect in the population but there actually is • beta level- probability of Type II error = .20 ←...
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This note was uploaded on 08/30/2010 for the course PSYC 209 taught by Professor Hoffman during the Spring '08 term at University of Delaware.
- Spring '08