Question
A psychologist studied self-esteem scores and found the data set to be normally distributed with a mean of 60 and a standard deviation of 5.
A psychologist studied self-esteem scores and found the data set to be normally distributed with a mean of 60 and a standard deviation of 5.
Part A: What raw score cuts off the bottom 33% of this distribution? Steps:
Q1: What is the z-score that cuts off the bottom 33% of this distribution?
Q2: What is the raw score that cuts off the bottom 33% of this distribution?
Part B: What percentage of the scores is between 65 and 70?
Q3: What is the z-score that corresponds to the raw score of 65?
Q4: What is the z-score that corresponds to the raw score of 70?
Q5: What percentage of the scores is between 65 and 70?
Part C: A raw score of 57.5 is associated with what percentile?
Q6: What is the z-score associated with a raw score of 57.5?
Q7: A raw score of 57.5 is associated with what percentile?
Part D: What raw scores mark the middle 95% of this distribution?
Q8: What are the z-scores that mark the middle 95% of this distribution?
Q9: What is the raw score below the mean?
Q10: What is the raw score above the mean?
Part E: What is the median of this distribution?
Q11: What is the median of this distribution?
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