Question

Given a sample of 20 students with a mean LQ. of 107 and s a) (99.55, 114.45) b) (97.21, 116.79) c) (96.13, 117.88) 17, find the 95% CL: d) (99.04, 114.96) e) none of these In a survey of 600 people with 317 claiming they would vote yes, find and interpret the 99% CL a) we are confident that the proportion of yes voters is .5283 b) we are sure of 317 yes votes c) we know that the proportion of yes voters lies within (.4758, .5808) d) we are 99% confident that the proportion of yes voters is .5283 e) we are 99% confident that the proportion of yes voters lies within (.4758, .5808) The area of each critical region for a two tailed test at α a) 005 01 is: b) .01 c) .025 d) .05 e) none of these The critical z-scores for one tailed tests at α .01 are: a) 1.645 b) t1.96 c) 2.33 d) 2.58 e) none of these The critical t-scores for one tailed tests at α .05 with 12 for sample size are: a) t2.18 b) t1.78 c) 2.20 d) 1.80 e) none of these The form(s) for the alternative hypothesis is/are: a) Ha: μ-"a #" b) Ha: μ< "a #" c) Hai μ > "a4" d) Ha: μ*"a #" e) all ofthese except (a)

Answer 1