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Unformatted text preview: H0 : The chance of getting a 4,5,6 on a dice is 0.5 H1 : The chance of getting a 4,5,6 on a dice is greater than 0.5 So a OTT only tests for deviation in one direction, a TTT does it in both directions (but half as effectively in each). In this case: H0: u = 83 H1: u is not equal to 83 A 90% confidence interval centered on the mean means the same as saying that alpha = 10% Critical value for 2-tail test with alpha = 10%: z = 1.645 test statistic: z(89) = (89-83)/3.5 = 1.714. .. In conclusion the test stat is in the reject interval when tested at the 10% significance level. Reject Ho. Your class results are better than the average at the 90% confidence level . This makes yours a OTT, as you are asking whether your class is “better”, not “different”....
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This note was uploaded on 08/29/2010 for the course ENGINEERIN 305 taught by Professor Martincandell during the Spring '10 term at Rio Hondo College.
- Spring '10