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Math Help - stats - Experimental Data and Design Analysis

  1. #1
    megz
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    stats - Experimental Data and Design Analysis

    If I could get some help with the following questions it would be good thanks. Not sure how to go about doing them..

    1.Fractures of the spine are common and serious among women with advanced osteporosis (low mineral density in the bones). Can taking strontuim renelate help? A large medical trial assigned 800 women to take either strontuim renelate or a placebo each day. All of the subjects had osteoporosis and had had at least one fracture. All were taking calcium supplements of bone density and counts of new fractures and recieving standard medical care. The response variables were measurements of bone dnesity and counts of new fractures over three years. The trial was conducted at 5 medical centres from different countries with each centre having treated 160 women. [16 marks]

    a) Use no more than 150 words to outline a procedure of completely randomised design for this experiment.

    b) Use no more than 150 words to outline a procedure of randomised block design for this experiment.


    Ans:

    a) Randomly give out either strontium renelate or the placebo to the paients at the 5 hosipitals and see if their condition improves????

    b) Split the paients at each hospital into two groups. In total 10 groups of 80. One group of 80 at each hospital is given a placebo and the other given strontium to see whether their condition improves or not???


    and

    2.
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