Chapter 5. Uniform Distribution. The age of an eighth grader on September 1 at Random Middle School is uniformly distributed from 13.5 to 15.5 years. We randomly select one eighth grader from the class.

1. Fill in "True" or "False": The random variable X is defined as the possible values of the age of eighth graders between 12 and 15 years old.
2. The value of f(x) = (round to two decimal places)
3. The value of mean = years.
4. The value of standard deviation = years. (round to two decimal places)
5. The probability (in % terms) that the child is over 14 years old is %. (round to two decimal places)
6. The probability (in % terms) that the child is between 14.5 and 15 years old is %. (round to two decimal places)