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
POPUL A TIO N GENETICS AND EVOLUTION- Population is the number of all individual of same species in a defined area at a particular time. As per modem synthetic theory pop

Q. Pain - criteria for endosteal implants? Pain and tenderness are subjective criteria and depend on patient's  interpretation of the degree of discomfort. Pain is defined as u

Explain which is better to grow plants in Rock sand or soil? Ans) When we grew plants inside, with no wind, and the plants in the rocks grew superior to the plants that were gr

1. Transcriptional analyses of eukaryotic cells reveal widespread production of RNA. Using specific examples describe how: a) microRNAs are able to influence gene expression.

hpw many neurons do we have?

Describe the term Epinephrine? Epinephrine is administered IV in increments of 1 mg diluted in 10 mls of normal saline (1:10,000). It can be given through the endotracheal tube

Diagnosis of diabetes mellitus which included history taking, symptoms and signs and various tests which can be done to diagnose a case of diabetes. Diabetes Mellitus (DM) or diabe

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Are the arteries or the veins constituted of more muscle tissue? How dissimilar are the walls of these two types of blood vessels? The arterial system has thicker muscle walls

Define Functions of Protein? Each of the various proteins in the body serves a specific function in the maintenance of life. Any loss in body protein, in reality, means a loss