A researcher is interested in whether students who are musicians have higher intelligence test scores than students in the general population. The researcher predicts that playing a musical instrument is associated with higher intelligence test scores. This is a _____-tailed test and the z_cv is _____. A)two; ±1.96 B)one; ±1.65 C)two; ±1.65 D)one; ±1.96

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Quizplus · Accepted Answer

The researcher has a specific directional hypothesis (musicians have higher scores), indicating a one-tailed test. For a one-tailed test at the 5% significance level, the critical z-value (z_cv) is ±1.65.

A Researcher Is Interested in Whether Students Who Are Musicians