# Finding the value for rejection region using some kind of table...

by korr2221
Tags: kind, region, rejection, table
 P: 20 I'm lost no how to find the cutoff rejection region and which table to use? This is an example, Data n 34 X-bar 10.3 s 3.1 98% Confidence Interval for µ is 10.3 ± 2.33 x 0.5316 = (9.0632 , 11.5368) Hypothesis H0: µ ≤ 9 H1: µ > 9 Tests Z-stat = 1.3 = 2.4452 Statistic 0.5316 Significance Level = 0.01 Rejection Region = Tail = RIGHT Cutt -Off = Z-alpha = 2.326 Decision = Reject H0 p-value = 0.0072 I understand how they reject H0, but I am lost how they got 2.326. I think it's in the Z-table but I'm not sure, can someone explain to me clearly. It would also help if you can tell me how to find 0.0072 for the p-value.
 HW Helper P: 1,334 I'm not sure how your Z table is set up - whether it gives only tail areas or cumulative probabilities. If it gives tail areas (areas to the right of specific Z-values, do this: look through the AREAS for 0.01 - the associated Z-value will be 2.326 If your Z- table gives cumulative probabilities (areas of the form P(Z <=z)), look for the area that is closest to 0.99 (this is 1 - 0.01) - again, the Z-value should be 2.236. Some tables only give the area between 0 and specified values of Z. If this is the case, look through the areas for the value closest to 0.49 - again, you should find Z = 2.236.

 Related Discussions Calculus & Beyond Homework 13 Calculus & Beyond Homework 6 Calculus & Beyond Homework 7 Introductory Physics Homework 4 Introductory Physics Homework 4