Answered: Determine if the following corresponds…

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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Determine if the following corresponds to a single-blind, double-blind, or matched pair design. a) A sample of 300 healthy adults was randomly divided into two groups of 150. One was given a low-calorie snack and the other a “regular” snack over a 30 day period. The body weight of the subjects was compared at the beginning and the end of the trial. Neither the subjects nor those conducting the trial knew which group a particular subject was a member of. b) 250 people were selected at random and were given both snacks described in part a) in random order without knowing which snack they were eating. The subjects were then asked which snack they preferred. c) A sample of 300 healthy adults was randomly divided into two groups of 150. One was given a low-calorie snack and the other a “regular” snack over a 30 day period. The body weight of the subjects was compared at the beginning and the end of the trial. The subjects did not know which group they were members of but those conducting the trial did.

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