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All of the following can be transmitted by drinking contaminated water, except
Null Hypothesis
A statement that asserts there is no effect or no difference, and it is the hypothesis that researchers aim to test against.
Directional Hypothesis
A hypothesis that specifies the direction of an anticipated difference or relationship between variables.
Nondirectional Research Hypothesis
An assumption indicating a link between variables, yet lacks details on the direction of their relationship.
Nondirectional Research Hypothesis
A hypothesis that predicts a relationship between variables but does not predict the direction of the relationship.
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