Question

20. If a diagnostic blood test for HIV, if you divided all the individuals who actually have HIV by the total number of individuals in the sample, you would be calculating the __________________________________________________

21. If population I had P1 = 0.50 and population II had P2 = 0.30 and n1 = 60 & n2=30), then the sampling distribution for the difference between two sample proportions would have a mean equal to __________ and a variance equal to ______________ (what values?)?

22. In a one-tailed test using the t-test statistic (n=20), if the alpha were set at 0.05, what is the critical value from the t- distribution you would use for the cut-off? ____________________________________________________________

Answer 1