Question: I. State the null and alternative hypotheses for each conjecture and determine whether the test is directional or non-directional. If it is directional, is it

I.State the null and alternative hypotheses for each conjecture and determine whether the test is directional or non-directional. If it is directional, is it left-tailed or right-tailed? Identify the claim.

A psychologist feels that playing soft music during a test will change the

results of the test. The psychologist is not sure whether the grades will be

higher or lower. In the past, the mean of the scores was 73.

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