What is directional alternative Hypothesis and Non-directional Alternative Hypothesis? Give example

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what does mutually exlusive mean?

If another variable systematically co-varies with the independent variable, then we likely have an extraneous variable b. a dependent variable an ex post facto design a confounding variable

what are two types of error? and explain both?

discuss a situation where you would test for independence.

How can I map this question in SPSS ?

Empirical directional hypothesis Would Study time and exam scores be relational or causal? How can we make a prediction about whether it's relational or causal? Is it a Positive or negative relationship?

Hope u help me?