Question 7 5 pts (TCO 7) The physician now decides to draw his 5% sample of cancer cases by selecting every 20th chart by medical record number. This is an example of: O random cluster sampling. O two-stage random sampling. O systematic sampling. O stratified random sampling. D Question 8 5 pts (TCO 8) In the above problems, the sample size is 100. The number of degrees of freedom for evaluating the statistical significance of the test result is: 0 99. 0 98. Face-Recorded_Vi..mp4 PK # 3 4 5 6 W E R T U S D F G H K X B N M