I21-34. What's the design? Read each brief report of statisticalresearch, and identifya) whether it was an observational study or an experiment.If it was an observational study, identify (if possible)b) whether it was retrospective or prospective.c) the subjects studied and how they were selected.d) the parameter of interest.e) the nature and scope of the conclusion the study can reach.If it was an experiment, identify (if possible)b) the subjects studied.c) the factor(s) in the experiment and the number of levels foreach.d) the number of treatments.e) the response variable measured.f) the design (completely randomized, blocked, or matched).g) whether it was blind (or double-blind).h) the nature and scope of the conclusion the experiment canreach.R3.5. Data were collected over a decade from 1021 men andwomen with a recent history of precancerous colon polyps.Participants were randomly assigned to receive folic acid(a B vitamin) or a placebo, and the study concluded thatthose receiving the folic acid may actually increase theirrisk of developing additional precancerous growths. Previ-ous studies suggested that taking folic acid may help toprevent colorectal cancer. (JAMA 2007, 297)

Given Information: Data was collected from 1021 men and women over a decade with a history of…

21-34. What's the design? Read each brief report of statistical research, and identify a) whether it was an observational study or an experiment. If it was an observational study, identify (if possible) b) whether it was retrospective or prospective. c) the subjects studied and how they were selected. d) the parameter of interest. e) the nature and scope of the conclusion the study can reach. If it was an experiment, identify (if possible) b) the subjects studied. c) the factor(s) in the experiment and the number of levels for each.

21-34. What's the design? Read each brief report of statistical research, and identify a) whether it was an observational study or an experiment. If it was an observational study, identify (if possible) b) whether it was retrospective or prospective. c) the subjects studied and how they were selected. d) the parameter of interest. e) the nature and scope of the conclusion the study can reach. If it was an experiment, identify (if possible) b) the subjects studied. c) the factor(s) in the experiment and the number of levels for each.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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