Question

35. A measuring instrument can be a) rellable but not vald b) valid but not rellable 36. Use the following formula the 10, and n 400. Sample Mean-l+ (1.96 umes SEM) tocompute the 9S% CI if the sample mean is so, sis a) 30.40,69.60 b) 49, 51 c) 49.50, 50.50 d) 49.02, s0.98 37.A rreient has one astertsk C2) next to t. This typicaly means that is correlation is s a) ps.os b) p<,01 e) p<,001 d) none of the above tion is statistically significant at nd a medical finding is statistically significant, this means that It is a finding considered to be clinica lly significant by the research community. Answer a for true and b for false. 39. If the mean patient recovery time for operation X for all patients is 10 hours (σ 2) and the sample of patients (n-100) who got the updated (but more expensive) vitamin protocol had a mean recovery time of 9.80 hours, what is the approximate probability of getting an improvement at least this big due to chance? Hint: The first step is to find the standard error. The second step is to find Z which in this case equals (the sample mean)-(the population mean) divided by the standard error. The third step involves the use of the chart on the next page) a) 50% b) 34% c) 2.28% d) 16% 40. If the mean patient recovery time for operation X for all patients is 10 hours(o -5) and the patients (n-100) who got the updated (but more expensive) vitamin protocol had a mean recovery time of 9 hours, what is the likelihood of getting an improvement at least this big due to chance? Hint: The first step is to find the standard error. The second step is to find Z, which in this case equals (the sample mean)-(the population mean) divided by the standard error. The third step involves the use of the chart below) a) 50.00% b) 13.59% c) 34.13% d) 2.28%

Answer 1