The mean age of a normally distributed sample of murder victims in 2009 is 28.15, and the standard deviation is 12.55. Based on this information, answer the questions below:
What percentage of murder victims are between the ages of 18 and 30?
What percentage of murder victims are between the ages of 30 and 60?
What percentage of murder victims are below the age of 15?
What percentage of murder victims are above the age of 25?
What Z Score represents the point at which 35% of the murder victims had lower ages? (In other words, what is the Z Score equivalent to being at the 35th percentile?)
What Z Score represents the point at which 70% of the murder victims had lower ages? (In other words, what is the Z Score equivalent to being at the 70th percentile?)