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Examen

Sophia Introduction to Statistics Unit 1 Milestone 1,
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20

octubre 2023

2023/2024

A+
The administrator of a hospital conducted a survey among patients in the cardiology wing to determine service levels of the nursing staff in the hospital. Which of the following explains how the results of the survey could be biased?  The sample does not include the doctors of the hospital.  The sample does not include all the patients in the hospital.  The sample does not include the board members of the hospital.  The sample does not include the staff members of the hospi...
kimanichelsea20
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Examen

Sophia Introduction to Statistics Unit 1 Milestone 1..
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21

octubre 2023

2023/2024

A+
A trainer is studying the effects of vitamin D on his athletes. He has realized that there are many potential confounding factors, such as gender and age. To limit the effect of these confounding variables, he decided to first group two athletes together based on these variables (for example, two 21-year-old males). Then he randomly assigned one person to receive the vitamin D and the other to receive a sugar pill. What type of experimental design does this situation demonstrate? Completely...
kimanichelsea20
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Examen

Sophia Introduction to Statistics Unit 1 Milestone 1
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16

octubre 2023

2023/2024

A+
Several scientific and statistical studies have been done to determine whether or not pollutants in soil increase the incidence of cancer. A study based on many previous studies summarizes that there is no link between pollutants in soil and cancer. This kind of statistical study is called a __________. Clinical trial Prospective study Matched-pair design Retrospective study RATIONALE Since the data has already been collected it is called a retrospective study design. CONCEPT Prospecti...
kimanichelsea20
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