Statistics
posted by Justin .
Could someone please help me with this question. I did the entire question, but then when I was assigning them to the two different types of treatments, I was having some trouble. I just figured that you could just number the females 142, and randomly pick 10 of them, and then number the males 4387, and randomly select 10 of them. But, then how do you select the two types of treatment? I figured that since there are only 2 types, then you could just say the odd numbered ones get treatment 1 and the even numbered ones get treatment 2, but this definitely doesn't work. Could someone please just lead me in the right direction? Thanks!
You have been asked to select 20 participants for a drug trial that compares two different treatments for migraine headaches. The researchers have requested a block design (male/female) with control groups for each block. You have been given a list of people willing to participate in the trial, numbered from 1 to 87. The first 42 people are female; the rest are male.
(a)Sketch a diagram for the design of this experiment.
(b)In paragraph form, clearly explain how you will select your sample.
(c)Beginning with Line 123 of the Random Number Table, select the twenty participants.
Although I cannot help you with all of your questions, I think I can help a little.
If you want, you can renumber the males 145 to continue on in your Random Number Table. This would still give you 10 of each gender in the two blocks.
Within the randomly selected groups of males and females, just select every other one as treatment 2 and the remainder will be treatment 1. Since the original selection was random, this will also be random.
However, for a better experimental design, I would have a third group, which is given a placebo.
I hope this helps. Thanks for asking.
Respond to this Question
Similar Questions

Grade 12 Physics
CAN SOMEONE PLEASE HELP ME WITH MY QUESTION I AM REALLY STUCK!!!!! SOMEONE ANYONE!! I need some help, my brain hurts already just over analyzing this question! [_] [_]Thanks! [_] 
algebra
Hi, can someone please help me with this question? 
year 8 reRe teachers
i posted this question before but can`t see it on the page.sorry if it is there. please could someone help me i need to write an essay for re . i don`t really understand what to do. if someone could explain the question id be very … 
statistics
i have a question regarding statistics. i just don't know how to do it and would really appreciate if someone could tell how i can solve it. the question is; a population of scores contains exactly 5 scores : 2, 3, 6, 8, 11 a) there … 
Math
i have a question regarding statistics. i just don't know how to do it and would really appreciate if someone could tell how i can solve it. the question is; a) compute the mean and the standard deviation of the population? 
science
This isn't a homework/quiz question, Well I guess it is homework, But I need to find out three types of friction in a machine I just built, but I don't know any types of friction. So I was wondering if someone could list the types … 
Science
Im having trouble with reading a chemical equation. ( Numbers on the right side of the element are subscripts ) A) 2SO2 + O2 +2H2O > 2H2SO4 1. How many total molecules are represented? 
Science
Im having trouble with reading a chemical equation. ( Numbers on the right side of the element are subscripts ) A) 2SO2 + O2 +2H2O > 2H2SO4 1. How many total molecules are represented? 
PICOT Question
I would like to to research on Concussions in College Football Players but am having trouble trying to use the PICOT to formulate a question. This is what I have so far: In college football athletes with concussions does current treatments … 
psychology
I'm having trouble finding a solid answer to this question: Do psychoanalyststobe have to be psychoanalyzed by someone already practicing, or do they just analyze themselves as part of their training?