2. Exercise Stress Test. Campbell and Swinscow (2009) describe an experiment in which twenty patients, ten of normal weight and ten severely overweight underwent an exercise stress test. The patients had to lift a progressively increasing load for up to 12 minutes, but they were allowed to stop earlier if they could do no more. On two occasions the equipment malfunctioned before 12 minutes. The times (in minutes) achieved were: Normal weigh 2, 4, 6, 8, 8??, 9, 10, 12? , 12? , 12? Overweight 1, 3, 4, 5, 6, 7, 7??, 9, 11, 12? Here, ? means that the end of test was reached, and ?? stands for equipment malfunction. Assume that the equipment does not fail and test does not have 12 minutes time limit, that is, all subjects are to stop only if they could do no more. Compare mean times to stopping for the two groups. Is the difference in mean times significant? Hint. Propose a parametric model, use censoring, and set noninformative priors on all parameters. There is no a unique way to model this data.

6:24 5GEL Exit We say a hypothesis test is significant if we reject HO. Which one of the following statements is/are always true? SELECT ALL THAT APPLY O If a test of hypothesis is significant at the 5% significance level, then the test would also be significant at the 1% significance level. O If a test of hypothesis is significant at the 10% significance level, then the test would also be significant at the 15% significance level. O If a test of hypothesis is significant at the 5% significance level, then the test would also be significant at the 1% significance level. O If a test of hypothesis is significant at the 3% significance level, then the test would also be significant at the 5% significance level O None of the answers is true * Previous Next1. Let {N1(t],t 33 0} he a Poisson Process with rate A. Can Z[t) = aN1(t) + 6N2(t] ever be a Poisson Process, where 0: and 3 are some non-zero constants. In other words, are there any values of o, ,8, and N2(t) such that {Z (t): 2 0} is a Poisson Process. Please note that {N2[t),t 2 U} is not allowed to be either a Poisson Process, and is also not allowed to be a trivial random process (eg.1 it is not a constant over all time). Carefully prove or disprove. Let (Nut 2 0) be a Poisson process with rate A=2. Find the probability that we see 3 events in the interval [0,3) and 6 events in the interval (1,6]. Round answer to 5 decimals.Discussion Problem WO1b-02: Expected Activity Time and SD? Act 1+4x3+5 = Jn. 12-4. V = ( =1.78 UmInMOONmTHAN m SEEM 3530 PERT