In a study investigating the efficacy of a flu vaccine, parents of school children were asked if they consented to have their kids participate in this study. If they consented, their children were vaccinated. The flu rates among the children whose parents consented and those who didn't consent were compared. What would be a better study design? (A) Compare flu rates in a given year with that in a previous year. (B) Divide the kids whose parents consented into vaccine and no vaccine groups. (C) Compare flu rate in the vaccine group of one grade with that of another grade in which no vaccine is given. (D) None of the above.

In a study investigating the efficacy of a flu vaccine, parents of school children were asked if they consented to have their kids participate in this study. If they consented, their children were vaccinated. The flu rates among the children whose parents consented and those who didn't consent were compared. What would be a better study design? (A) Compare flu rates in a given year with that in a previous year. (B) Divide the kids whose parents consented into vaccine and no vaccine groups. (C) Compare flu rate in the vaccine group of one grade with that of another grade in which no vaccine is given. (D) None of the above.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 11PPS

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