Biology
Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 37.7, Problem 1TC
Summary Introduction

To explain: Whether increase means that measles was getting more infectious or might there be any another reason.

Introduction: Measles is an infectious disease that is transmitted by the transfer of affected respiratory droplets through the air. The cases of this disease increase in late winter and early spring seasons.

Summary Introduction

To suggest: A reason why the number of measles cases did not immediately decline in 1964, although the vaccines were licensed in 1963.

Summary Introduction

To determine: The additional data required to test the hypothesis.

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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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