Week_5_answers

Week_5_answers - HP340: Biostatistics, Fall 2009 DUE: 9/30...

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HP340: Biostatistics, Fall 2009 Name:________________________ DUE: 9/30 Show all work. Week 5 Answers 1) The statistical symbol H 0 is used to represent a(n) ______ hypothesis. a. rejected b. alternative c. accepted *d. null e. type 1 2) a) Which of the following could be an appropriate null hypothesis for a statistical test concerning the mean income of 17-year-old males? a. H 0 : X = $2617 b. H 0 : X ≠ $2617 c. H 0 : µ ≠ $2617 *d. H 0 : µ = $2617 e. Correct answer choice not provided b) Which of the following could be an appropriate directional null hypothesis for a statistical test concerning the mean income of 17-year-old males? *a. H 0 : µ ≥ $2617 b. H 0 : X = $2617 c. H 0 : X ≠ $2617 d. H 0 : µ = $2617 e. Correct answer choice not provided 3) In behavioral research, alpha is usually set at ______. a. .10 *b. .05 or .01 c. .01 or .001 d. alpha is not set in behavioral research e. .50 since it is half of the sampling distribution of the mean 4) A statistical test that locates rejection regions at both ends of the sampling distribution
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This note was uploaded on 11/30/2009 for the course HP 400m at USC.

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Week_5_answers - HP340: Biostatistics, Fall 2009 DUE: 9/30...

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