Men be diagnosed as not healthy if you want the probability of a type one errorĢ% in the tail corresponds to a z-score of 2.05 2.05 × 20 = 41 180 + 41Ī type II error occurs when one rejects the alternative hypothesis (fails to
0122, which is theġ80 and a standard deviation of 20, at what level (in excess of 180) should If the cholesterol level of healthy men is normally distributed with a mean ofġ80 and a standard deviation of 20, and men with cholesterol levels over 225Īre diagnosed as not healthy, what is the probability of a type one error? One-tailed test of hypothesis is is used when one talks about type I error. Of hypothesis, and is denoted by *alpha*. The probability of a type I error is the level of significance of the test
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