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
Define Standard titration - estimation of vitamin c in Chillies? Pipette 5 ml of standard ascorbic acid solution into a 100 ml conical flask. Fill the burette with the dye solu


How mechanical soft diet is a normal diet The mechanical soft diet is a normal diet that is modified only in texture for ease of mastication. This is used when a patient canno

Q. What is the hormone secreted by the growing ovarian follicles? What is the action of that hormone upon the uterus? The follicles that are growing after menses secrete estrog

In a properly functioning negative feedback system, the A. value of the controlled variable will always be very close to the threshold value when the system is in steady state.

How many grams of sodium dodecyl sulfate (mw = 288.37) would you dissolve in 80 mLs of water to make a 20% solution of SDS?

Define some Precautions for spore staining in a given bacterial culture? 1. Do not allow malachite green to dry on slide. 2. Decolourization should be done only after coolin

What are mutagenic agents? The Mutagenic agents, or mutagens, are physical, chemical or biological factors that can cause alteration in DNA molecules. Instances of believed

Q. Concerning the presence of the nucleus what is the difference between bacterial and animal cells? Animal cells (cells of living beings of the kingdom Animalia) have an inte

Q. What is the function of platelets? What consequences does the clinical condition known as thrombocytopenia yield? Platelets, also known as thrombocytes are fragments of gian