STAB22H3 Lecture Notes - Sign Test, South Dakota Highway 50, Type I And Type Ii Errors
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STAB22H3 Full Course Notes
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[282] (this slide is a repeat of [275]) Then use median instead of mean to do hypo. testing and making cis. What if df not on the table? (ex) If you look in table t, there is no 34 df. Round down to next lower val (ie. 32 df) 2-sided value is then b/ween 0. 05 and 0. 10. B/c our val is 1. 87, but that exact val is not on the table, but it is in b/ween the two listed table val"s, 1. 694 and 2. 037 in 32 df row. => b/c we set alpha = 0. 05, fail to reject h0. Then, instead of using mean for hypo testing, use median (ex) If h0 true, then each sample val equally likely to be above/below 50. B/c there are only two probabilities, and we have sample size, and we are looking at. #successes in specified #trials (10), use binom(10, 0. 5)
