A Researcher Finds That the Number of Positive Ranks Is

question 6

Multiple Choice

A researcher finds that the number of positive ranks is 13 and the number of negative ranks is 4 using a sample of 17 participants.Based on these data,what is the decision for a related-samples sign test at a .05 level of significance?

• A) retain the null hypothesis
• B) reject the null hypothesis
• C) there is not enough information to answer this question

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Definitions:

Vaccines

Biological preparations that provide immunity to specific infectious diseases by stimulating the body’s defensive responses.

Toxic Chemicals

Substances that can cause harm to organisms and the environment when released or exposed in significant quantities.

Graphic Warnings

Visual health warnings found on product packaging, aimed at informing consumers of the risks associated with use, often used for cigarettes.

Biologically Magnified

Refers to the process by which the concentration of toxic substances increases in each successive link in the food chain.