foundations of biostatistics and epidemiology question 1 a screening test...

Question: foundations of biostatistics and epidemiology question 1 a screening test...

Question details

FOUNDATIONS OF BIOSTATISTICS AND EPIDEMIOLOGY

Question 1

A screening test for bowel cancer was administered to 2,289 individuals with biopsy-proven bowel cancer and to 5,053 individuals without this cancer. The screening test was positive for 1,683 of the proven cases and 295 of the cancer free individuals. What percentage of bowel cancer cases will be correctly identified by the test?Only the final answer is needed with two decimals; units or symbols such as % are not required.

=

Question 2

'Bracketing' in qualitative research means:

a)Researcher describes life experiences of the study participants without any preconceived ideas, bias or judgement of their own.

b)Making sure to use brackets on the calculator to get correct answer.

c)Getting incorrect answer due to not using brackets on the calculator.

d)This is something you use to jam the door or window to make sure it stays open or closed (whatever it is you are trying to do with the door or the window)!

Question 3

A unit coordinator knows that few students mix up the interpretation of p value from an assumption test as opposed to the p value from a 'hypothesis test' which is employed to actually test the study hypothesis. P value from an assumption test will only tell us if the assumption is violated or not violated but it the p value of the actual hypothesis test that will determine our overall conclusion about the study. Anyway let's move on with the real question below:

Students studying a second year statistics unit were requested to respond to the statement 'P value scares me' with possible response options 'Always, Most of the times, Sometimes, Rarely or Never'. If the unit coordinator wants to explore whether response rankings are actually different between Internal and Fully Online students and chance is unlikely, which test should be selected for the analysis?