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#12993

statistics

data analysis

average

hard

90 sec

Data set S consists of the ages of 100 participants and has a mean age of 15 years. Data set T consists of the ages of 50 participants and has a mean age of 30 years. Data set U consists of the ages of the 150 participants from data sets S and T. What is the mean age, in years, of data set U?

• Up to 5 characters (6 if negative). Only numbers, decimal (.), fraction (/), negative (-).
• Fractions must be in lowest terms.
• Mixed numbers must be converted to improper fractions.