• A researcher is interested in whether music played during an exam will improve exam performance. Students in one class listen to music during an exam and students in another class take the exam in silence. The researcher set alpha at 0.05. Test scores for both classes are compared using a statistical software program. The mean test score for the class that listened to music during the exam is 95, while the mean test score for the class that took the exam in silence is 82. The obtainedp-value from the independent groupst-test is 0.02. Be sure to answer the following questions:
• State the null and alternative hypothesis.
• Determine if this is a directional or non-directional test. Please explain your answer.
• Establish the conclusion of this study based on thep-value and the means provided.
• Describe the Type I error for this study.
• Describe the Type II error for this study.