PRINT PSYC 331 QUIZ 2 Version D

PRINT PSYC 331 QUIZ 2 Version D - PSYC 331 QUIZ #2 Version...

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Version D Name___________________________________ Multiple Choice . Identify the choice that best completes the statement or answers the question. ____ 1. One sample of n = 4 scores has a mean of M = 10, and a second sample of n = 8 scores has a mean of M = 20. If the two samples are combined, the mean for the combined sample will be a. greater than 15 but less than 20 b. equal to 15 c. less than 15 but more than 10 d. None of the other choices is correct. ____ 2. In a population with m = 60, a score of X = 58 corresponds to a z-score of z = -0.50. What is the population standard deviation? a. 2 b. 1 c. cannot be determined without additional information d. 4 ____ 3. What is the shape of the distribution for the following set of scores: 25, 26, 24, 26, 25, 3, 7, 6, 15, 10, 25, 24, 26 a. symmetrical b. positively skewed c. cumulative d. negatively skewed ____ 4. A recent study reports that infant rats fed a special protein-enriched diet reached an adult weight 10% greater than litter-mates raised on a regular diet. For this study, what is the in- dependent variable? a. the type of diet given to the rats b. the rats given the protein-enriched diet c. the adult weight of the rats d. the rats given the regular diet ____ 5. A population of N = 10 scores has a mean of m = 80. If 5 points are added to every score in the distribution, what is the value of the new mean? a.
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This note was uploaded on 01/15/2010 for the course PSYC 331 taught by Professor Dianealonso during the Fall '09 term at UMBC.

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PRINT PSYC 331 QUIZ 2 Version D - PSYC 331 QUIZ #2 Version...

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