using a two-sample t-test , Biology

 After stinging its victim, the honeybee leaves behind the barbed stinger, poison sac, and muscles that continue to pump venom into the wound. A study compared two methods of removing the stinger left behind: scraping off with a credit card or pinching off with thumb and index finger. A total of 40 stings were induced on volunteers. Twenty were removed with the credit card method, and twenty were removed with the pinching method. The size of the welt left by each sting was measured ten minutes later. All 40 measurements came from two volunteers, every of whom received one treatment ten times on one arm and the other treatment ten times on the other arm.

a.    The data were analyzed using a two-sample t-test with a sample size of 20 for each treatment. What is wrong with this approach? verify the problem by name, and describe how it can lead to misleading results.

b.    What test would be a better choice for these data?

c.    Suggest an improvement in the experimental design.

 

Posted Date: 3/16/2013 7:24:37 AM | Location : United States







Related Discussions:- using a two-sample t-test , Assignment Help, Ask Question on using a two-sample t-test , Get Answer, Expert's Help, using a two-sample t-test Discussions

Write discussion on using a two-sample t-test
Your posts are moderated
Related Questions
The Protein targeting or protein sorting is the mechanism by that a cell transports proteins to the appropriate positions in the cell or outside of it. A Sorting targets can be the

Q. Concerning solubility, how are the lipids classified? Oils and Fats are hydrophobic molecules, i.e., they are insoluble in water and non polar. Lipids in general are molecul

How mathematics and statistics related to Biology? This report emphasizes the benefits that the fields of mathematics and statistics can bring to biology, but there are recipro

Q. What are anticoagulants? What are the practical applications of anticoagulants, like heparin, in Medicine? Ordinarily there are anticoagulants circulating in the plasma sinc

Q. What is the full chemical equation of photosynthesis? The full chemical equation of photosynthesis is given below: 6 CO 2 + 12 H 2 O + light --> C 6 H 12 O 6    + 6 H 2

How do bacteria reproduce? Bacteria replicate by binary fission (scissiparity). Some bacteria though present a kind of sexual reproduction (transformation, transduction or conj

An enhance in parasympathetic discharge to the heart leads to A. An enhance in the conductance of F-channels in SA node cells. B. An enhance in the conductance of potassium

what are the physical requirements to become a zoologist?

Q. How are inhalation and expiration carried out? The diaphragm exclusive of mammals and the intercostals muscles can contract or relax varying the volume of the thorax the com

Define Agar Syringe/Agar Sausage Method? Agar syringe method involves 100 ml syringe, which is filled with agar. A layer of agar is pushed beyond the end of the barrel by means