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Category > Statistics Posted 14 May 2017 My Price 5.00

A researcher is planning to compare the effects of two different

A researcher is planning to compare the effects of two different types of lights on the growth of bean plants. She expects that the means of the two groups will differ by about 1 inch and that in each group the standard deviation of plant growth will be around 1.5 inches. Consider the guideline that the anticipated SE for each experimental group should be no more than one-fourth of the anticipated difference between the two group means. How large should the sample be (for each group) in order to meet this guideline?

the standard error of the mean for each diet should not exceed 5 kg.

(a) If the population standard deviation of weight gain is guessed to be about 20 kg on any of the diets, how

many cattle should be put on each diet in order to achieve a sufficiently small standard error?

(b) If the guess of the standard deviation is doubled, to 40 kg, does the required number of cattle double?

Explain.

 

Answers

Alpha Geek
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Status NEW Posted 14 May 2017 05:05 PM My Price 5.00

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file 1494782223-Answer.docx preview (206 words )
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