Statistical Analysis and Hypothesis Testing: Chapter 13 Homework

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Statistical Analysis and Hypothesis Testing: Chapter 13 Homework Chapter 13 Homework Questions 1 - 3 below are based on the following scenario: A professor believes the students in a statistics class this term are more creative than most other students attending the university. A previous study found that students at the university had a mean score of 35 on a standard creativity test, and the current class of 30 students has an average score of 40 on this scale with a standard deviation of 8.93. 1. What is t he t score? 2. What is the effect size? 3. If the professor wanted to test the null hypothesis described in the scenario using the 5% level of significance, what is the cut - off t score ? 4. What is the conclusion based on Question 3? (reject or retain the null hypothesis) Since the obtained t - score (3.07) exceeds the critical value (2.05), we reject the null hypothesis . Answer : Reject the null hypothesis. Questions 5 - 6 below are based on the following scenario:
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