A researcher wants to compare the average weight gain of two different types of feed (Feed A
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Question:
A researcher wants to compare the average weight gain of two different types of feed (Feed A and Feed B) for a group of growing pigs. They randomly assign 30 pigs to each feed group and measure their weight gain in kg at the end of 4 weeks. Use the R output on the following page to answer -
(a) What is a suitable null/alternative hypothesis for the research question: Is there any difference between feed A and feed B in terms of weight gain?
(b) Describe the location, shape, and spread of each group
(c) Discuss the assumptions
(d) How do we interpret the p-value?
(e) How do we interpret the confidence interval? (f) How do we interpret the sample means?
Related Book For
Microeconomics An Intuitive Approach with Calculus
ISBN: 978-0538453257
1st edition
Authors: Thomas Nechyba
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