To argue: Feral cats must be trapped and removed in order to protect plovers. Introduction: Endangered species are organisms that are about to extinct. Piping plovers are tiny shore bird. They are considered as the threatened species due to the habitat loss, increased predator population, decreased food availability and other disturbances. Some predatory animals such as cats, gulls and fox are the important limiting factors of plovers. The plans for the protection of endangered animals are established by the U.S. Fish and Wildlife Service (USFWS).

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Q8. A researcher wants to study the effectiveness of a pill intended to reduce stomach heartburn in pregnant women. The researcher chooses randomly 400 women to participate in this experiment for 9 months of their pregnancy period. They all need to have the same diet. The researcher designs two groups of 200 participants: One group take the real medication intended to reduce heartburn, while the other group take placebo medication. In this study what are: Independent variable: Dependent variable: Control variable: Experimental group: " Control group: If the participants do not know who is consuming the real pills and who is consuming the sugar pills. This study is It happens that 40% of the participants do not find the treatment helpful and drop out after 6 months. The researcher throws out the data from subjects that drop out. What type of bias is there in this study? If the company who makes the medication funds this research, what type of bias might exist in this research work?

Answer 1

Question

Chapter 44, Problem 1CT

Summary Introduction

To argue:

Feral cats must be trapped and removed in order to protect plovers.

Introduction:

Endangered species are organisms that are about to extinct.

Piping plovers are tiny shore bird. They are considered as the threatened species due to the habitat loss, increased predator population, decreased food availability and other disturbances. Some predatory animals such as cats, gulls and fox are the important limiting factors of plovers.

The plans for the protection of endangered animals are established by the U.S. Fish and Wildlife Service (USFWS).

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Q8. A researcher wants to study the effectiveness of a pill intended to reduce stomach heartburn in pregnant women. The researcher chooses randomly 400 women to participate in this experiment for 9 months of their pregnancy period. They all need to have the same diet. The researcher designs two groups of 200 participants: One group take the real medication intended to reduce heartburn, while the other group take placebo medication. In this study what are: Independent variable: Dependent variable: Control variable: Experimental group: " Control group: If the participants do not know who is consuming the real pills and who is consuming the sugar pills. This study is It happens that 40% of the participants do not find the treatment helpful and drop out after 6 months. The researcher throws out the data from subjects that drop out. What type of bias is there in this study? If the company who makes the medication funds this research, what type of bias might exist in this research work?

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