26. 75 healthy men were randomly assigned to one on the two groups: about half were given alcohol to drink (0.85 grams of per kilogram of body weight); the rest drank a placebo. Participants were then given 30 minutes to read up to 36 pages of a book. Every three to four minutes participants were prompted to indicate whether they were "zoning out" (losing concentration on what they were reading). The number of times participants indicated they were "zoning out" was recorded for each subject. The following table summarizes data on the number of episodes of zoning out. Group N Mean number of times "zoning out" Standard deviation "n" "mu" "s" Icohol 40 2.24 0.40 lacebo 35 1.44 0.24 a) Give the number of degrees of freedom for the conservative (non-software) option for using a two-sample t procedure. b) Assume that the conditions for inference are satisfied and determine a 90% confidence interval for the difference in population means when alcohol is administered versus when it is not, using the degrees of freedom from your answer to part a).

26. 75 healthy men were randomly assigned to one on the two groups: about half were given alcohol to drink (0.85 grams of per kilogram of body weight); the rest drank a placebo. Participants were then given 30 minutes to read up to 36 pages of a book. Every three to four minutes participants were prompted to indicate whether they were "zoning out" (losing concentration on what they were reading). The number of times participants indicated they were "zoning out" was recorded for each subject. The following table summarizes data on the number of episodes of zoning out. Group N Mean number of times "zoning out" Standard deviation "n" "mu" "s" Icohol 40 2.24 0.40 lacebo 35 1.44 0.24 a) Give the number of degrees of freedom for the conservative (non-software) option for using a two-sample t procedure. b) Assume that the conditions for inference are satisfied and determine a 90% confidence interval for the difference in population means when alcohol is administered versus when it is not, using the degrees of freedom from your answer to part a).

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Description: 26. 75 healthy men were randomly assigned to one on the two groups: about halfwere given alcohol to drink (0.85 grams of per kilogram of body weight); the restdrank a placebo. Participants were then given 30 minutes to read up to 36 pagesof a book.

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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