A psychology professor has developed a workshop designed to reduce the apprehension of students taking university...
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A psychology professor has developed a workshop designed to reduce the apprehension of students taking university courses for the first time. All incoming freshmen take a standardized apprehension assessment which has resulted in a normal distribution with μ= 80 and o = 12. A random sample of n = 44 new freshmen who attended the professor's workshop obtained a M = 76. Answer the following question with proper explanations and solutions a. Using the four-step hypothesis testing procedure, test at alpha = 0.05 using a one- tailed test (Please show the step-by-step solution). 1. Formulate Hypotheses in words 2. Indicate the Alpha Level and Determine Alpha Level 3. Calculate relevant statistics 4. Make a decision and report results b. What was the size of the effect? c. If an alpha level of alpha = 0.01 was used, would the statistical decision remain the same? Explain. But first, show a step-by-step solution if we are using a = .01. d. Based on your answers to "c" above, how is the power of a statistical test related to the alpha level that is set by the researcher? A psychology professor has developed a workshop designed to reduce the apprehension of students taking university courses for the first time. All incoming freshmen take a standardized apprehension assessment which has resulted in a normal distribution with μ= 80 and o = 12. A random sample of n = 44 new freshmen who attended the professor's workshop obtained a M = 76. Answer the following question with proper explanations and solutions a. Using the four-step hypothesis testing procedure, test at alpha = 0.05 using a one- tailed test (Please show the step-by-step solution). 1. Formulate Hypotheses in words 2. Indicate the Alpha Level and Determine Alpha Level 3. Calculate relevant statistics 4. Make a decision and report results b. What was the size of the effect? c. If an alpha level of alpha = 0.01 was used, would the statistical decision remain the same? Explain. But first, show a step-by-step solution if we are using a = .01. d. Based on your answers to "c" above, how is the power of a statistical test related to the alpha level that is set by the researcher?
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a 6 M80 244 The Z 80 test statistic used here is So at 005 critical ... View the full answer
Related Book For
Discovering Advanced Algebra An Investigative Approach
ISBN: 978-1559539845
1st edition
Authors: Jerald Murdock, Ellen Kamischke, Eric Kamischke
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