Multiple Choice
In a research sample of high school students, the variable "number of MySpace friends" formed a normal distribution with a mean of 45 and a standard deviation of 16. Valentina had 53 friends. What was her approximate percentile rank?
A) 31st
B) 53rd
C) 69th
D) 49th
Correct Answer:

Verified
Correct Answer:
Verified
Q2: Lucille took the same exam, but received
Q3: A leptokurtic distribution of a variable:<br>A) is
Q4: When statisticians refer to the distribution of
Q5: A z-score is:<br>A) the highest value that
Q6: If the research sample contained 500 students,
Q7: One hundred students took a statistics mid-term
Q9: In the standard normal distribution:<br>A) the curve
Q10: What does it mean when we say
Q11: Approximately what percentage of scores of a
Q12: Which of the following z-scores would fall