How many larvae per treatment, Biology

A study is made to verify the effects of pesticide exposure on pupal weight of butterflies. In a pilot study, 5 randomly selected larvae are raised on plants exposed to the pesticide and their weights at pupation are calculated. Another 5 randomly selected larvae are raised on untreated plants and their weights at pupation are measured.

1699_44.png


a.    A larger study with 20 larvae in every treatment is planned. Use the pilot data to estimate the power of the larger study to detect a difference as small as 0.5 g. Assume that assumptions for a parametric test are met.

b.    What is the smallest difference that could be detected with power of 0.8 and a sample size of 20 larvae in each treatment?

c.    How many larvae per treatment would be needed to detect a difference of 0.5 g with power of 0.8?

 

Posted Date: 3/16/2013 7:22:13 AM | Location : United States







Related Discussions:- How many larvae per treatment, Assignment Help, Ask Question on How many larvae per treatment, Get Answer, Expert's Help, How many larvae per treatment Discussions

Write discussion on How many larvae per treatment
Your posts are moderated
Related Questions
Fertilization - Development Biology Previously you knew the process which leads to the differentiation of the male and female germ cells, the sperm and ova, respectively. In t

Each ventricle has an inflow part beginning just in front of the corresponding atrioventricular orifice and running forwards to the left towards the apex of the heart. The cavity t

Which are plant tissues that form the plant roots? Roots have a central portion called medulla made of vascular tissue outer phloem and inner xylem. Medulla is delimited by per

A.    In order to determine the atomic number of an element we need to know the number of protons in an atom. As we know that atom is neutral we can also take the number of electro

Define Causes of iron Deficiency Anaemia? Anaemia is a condition in which the blood cannot carry enough oxygen. This may be because there are fewer red blood cells than normal,


Q. What are the main biological functions of water? Water is the basic solvent for chemical reactions of living beings; it is the main means of substance transportation in the

Disorder of Platelets - Purpura Purpuras  are bleeding disorders characterised by petechiae  and ecchymosis which may be due to deficiency in either,  the number or quality of

Which of the following is a false statement regarding the activity of DNA polymerase during  the replication process? A. DNA polymerase reads the template strand in the 5' to 3

What are the three main signs of diabetes? The three main signs of diabetes mellitus are called as the diabetic triad: polyuria, polydipsia and polyphagia. Polyuria is the e