A population has ? = 50 and ? = 5. If 10 points are added to every score in the population, then what are the new values for the mean and standard deviation?
a. ? = 60 and ? = 5
b. ? = 50 and ? = 5
c. ? = 50 and ? = 15
d. ? = 60 and ? = 15
Answer: a. ? = 60 and ? = 5
Psychology
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