Sunday

March 29, 2015

March 29, 2015

Posted by **Justin** on Monday, April 2, 2007 at 9:51pm.

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 1-45 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.

**Answer this Question**

**Related Questions**

statistics - n=15 and there are 3 groups These data are analyzed by an ANOVA, ...

science - This isn't a homework/quiz question, Well I guess it is homework, But ...

Maths - Matrices - I'm having trouble with doing this matrix proof The question ...

Grade 12 Physics - CAN SOMEONE PLEASE HELP ME WITH MY QUESTION I AM REALLY STUCK...

Religions - I am having some trouble locating the answers to this question could...

math - I'm having trouble on how to figure something out. The question says a ...

statistics - i have a question regarding statistics. i just don't know how to do...

7th grade science - How are cancer cells different from normal, healthy cells? ...

year 8 re-Re teachers - i posted this question before but can`t see it on the ...

ALgebra - I am having trouble with functions the question is to find the ...