ReviewQuiz3_Chapter5~8_0304_Spring11

# ReviewQuiz3_Chapter5~8_0304_Spring11 - Psy207B Name: _...

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Psy207B March 4, 2011 Name: ________________________ Person Number: ___________________ 1 ReviewQuiz3_Chapter5~8 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Suppose you earned a score of X = 54 on an exam. Which set of parameters would give you the highest grade? a. μ = 50 and σ = 2 b. μ = 50 and = 8 c. μ = 52 and = 2 d. μ = 52 and = 8 2. For a sample with M = 80, a score of X = 88 corresponds to z = 2.00. What is the sample standard deviation? a. 2 b. 4 c. 8 d. 16 3. What proportion of a normal distribution falls between z = -1.16 and z = +1.16? a. 0.3770 b. 0.6230 c. 0.2460 d. 0.7540 4. For a particular population, a sample of n = 4 scores has a standard error of 10. For the same population, a sample of n = 16 scores would have a standard error of _____. a. 2.5 b. 5 c. 10 d. 20 5. A random sample of n = 4 scores is obtained from a normal population with μ = 20 and = 4. What is the probability of obtaining a mean greater than M = 22 for this sample? a. 0.50 b. 1.00 c. 0.1587 d. 0.3085 6. A researcher is conducting an experiment to evaluate a treatment that is expected to decrease the scores for individuals in a population which is known to have a mean of μ = 80. The results will be examined using a one-tailed hypothesis test. Which of the following is the correct statement of the null hypothesis?

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## This note was uploaded on 04/20/2011 for the course PSY 207 taught by Professor Pfordesher during the Spring '07 term at SUNY Buffalo.

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ReviewQuiz3_Chapter5~8_0304_Spring11 - Psy207B Name: _...

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