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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.
Ed e m a It refers to excessive accumulation of fluid in tissue spaces caused by disturbance in the fluid interchange between capillaries, tissue spaces and lymphatic vessel
Feline panleukopenia It is arguably the most important of all feline viral diseases and all members of the family Felidae are susceptible. This disease is commonly found in kitten
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Q. What is population growth rate? The Population growth rate (PGR) is the percent variation between the numbers of individuals in a population at two different times. Thus the
Explain the molecular difference between fats and oils. How do the differences affect their physical properties?
State in detail about the thylakoid membrane The thylakoid membrane contains all the factors associated with the photosynthetic electron transport leading to the generation of
C4 plants have higher net photosynthetic rate because a.they have no photorespiration b.can photosynthesise in low in
What phrase best describes oxidation- reduction reaction? A. phosphoryrylation energezing endergounic reactions b. transferring of electrons from one molecule to another c. shar
How is extracellular digestion related to cellular and tissue specialization? Several of specialized cells and tissues appeared with extracellular digestion to give enzymes and
explain mode of nutrition
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