STAT 3507 Exercise Questions Solutions
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Bernoulli Sampling Questions
Cluster Sampling Questions
Ratio, Regression and Difference Estimation
Stratified Random Sampling
Systematic Sampling
Two-stage Cluster Sampling Questions
1-A university professor who is correcting 600
written examinations decides to get a preliminary idea of the passing rate on the test. He decides to
use a simple randomized scheme to single out a smaller
number of exam copies for first-hand correction. In passing through the pile of
exams, he tosses an ordinary
six-sided die, once for each exam copy. If the die shows a 6, he corrects the corresponding exam, otherwise not. Suppose the sample
selected in this way consists of 90 students and that 60 out of
these are found to have passed.
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