PSYC 3301 Quiz 4 Questions with Verified Answers

PSYC 3301 Quiz 4 Questions with
Verified Answers
What position in the distribution corresponds to a z-score of z = -1.00? - ANS -Below
the mean by a distance equal to 1 standard deviation



What z-score corresponds to a score that is above the mean by 2 standard deviations? -
ANS -+2



For a population with a standard deviation of σ = 10, what is the z-score corresponding to a
score that is 5 points below the mean? - ANS -z= -0.50



For a population with µ = 80 and σ = 6, what is the z-score corresponding to X = 68? -
ANS --2.00



A population distribution has σ = 6. What position in this distribution is identified by a z-
score of z = +2.00? - ANS -12 points above the mean



On an exam with μ = 52, you have a score of X = 44. Which value for the standard deviation
would give you the highest position in the class distribution? - ANS -σ=8



You have a score of X = 65 on an exam. Which set of parameters would give you the best
grade on the exam? - ANS -μ = 60 and σ = 5



A population of scores has µ = 44. In this population, a score of X = 40 corresponds to z = -
0.50. What is the population standard deviation? - ANS -8
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