# HW_5 - answers - HP340: Biostatistics, Fall 2009 Name:_...

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HP340: Biostatistics, Fall 2009 Name:________________________ DUE: Wednesday 9/30 upload to BB before class (3:30) Show all work. Homework #5 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

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## This note was uploaded on 03/27/2010 for the course HP 340L at USC.

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HW_5 - answers - HP340: Biostatistics, Fall 2009 Name:_...

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