In: Statistics and Probability
3. The following research studies were conducted as completely randomized designs with a single treatment factor. Identify: (1) the treatment factor, (2) the number of treatments, (3) the experimental unit, (4) the sampled population(s), and (5) the response variable (or dependent variable).
(a) Six secondary schools are randomly selected from the Georgetown Schools. Two schools are randomly assigned to each of three assessment methods. Scores for reading are obtained for each school at the end of the school year.
(b) The amount of lead is measured in the exhaust emissions of two new BMW E series, two new Toyota Premio and two new Nissan Xtrail. The autos were randomly selected from a single day's production run at each of the three auto factories where the autos were manufactured.