using a two-sample t-test , Biology

Assignment Help:

 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.

 


Related Discussions:- using a two-sample t-test

Define meiosis, Give two examples in each case of organs or tissues in whic...

Give two examples in each case of organs or tissues in which you would expect  (a) meiosis,  (b) mitosis to be taking place   a) Meiosis is likely to

What are the roles of atp and nadph, Q. What are the roles of ATP and NADPH...

Q. What are the roles of ATP and NADPH in the chemical stage of photosynthesis? NADPH acts as reductant of carbon dioxide it delivers highly energetic hydrogen to precursor mol

Define stripping perforation - types of root perforation, Define Stripping ...

Define Stripping Perforation - Types of Root Perforation It is latral perforation caused by over instrumentation through a thin wall of the root. Most common on the in

Explain free water - water found in food, Explain Free Water - Water Found ...

Explain Free Water - Water Found in Food? Water which is bound by such minute forces, that its vapour pressure is equal to the vapour pressure of pure water. It can be found as

Structure and content of neuropsychological battery, Structure and Content ...

Structure and Content of NEUROPSYCHOLOGICAL BATTERY The battery contains 269 items, each of which may be scored on a 2- or 3- point scale. A score of 0 indicates normal perform

How does biogeography contribute to an evolution, How does biogeography con...

How does biogeography contribute to an understanding of evolution? In biogeography studies, same animals that seem to be closely related are adapted to dissimilar environments

Aortic and pulmonary orifices, These circular orifices are located at the u...

These circular orifices are located at the upper ends of the outflow parts of the left and right ventricles respectively. The pulmonary orifice which is 3 cms, is 0.5 cm larger tha

What are deciduous trees, What are deciduous trees? The Deciduous trees...

What are deciduous trees? The Deciduous trees are plants that lose their leaves in a period of the year and in the case of the deciduous trees of the temperate forest the fall

Define regulation of water balance, Define Regulation of Water Balance? ...

Define Regulation of Water Balance? The input of water, as well as, its loss can be highly variable due to individual habits and environmental factors; in spite of this, the to

Protozoa, what are characteristics of protozoa?

what are characteristics of protozoa?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd