Are the following statements true or false?
(a) The advantage of paired experiments is that am carry-over effects from one treatment to the other treatment do not affect the analysis.
(b) In an experiment to compare two treatments with an independent samples design, the random allocation of the experimental units between the two treatments is a good tool to help eliminate any bias in the data collection.
(c) The experimental design refers to the manner in which the data are collected.
(d) An experiment is performed to compare two medical treatments. If one treatment is a placebo, then an unpaired analysis should always be used.
(e) In a double-blind experiment the researcher does not know the true values of the variable being measured.
(f) A paired experimental design can be conducted as a blind experiment.
(g) For the analysis of two independent samples, the unequal variances procedure can still be used even if the experimenter suspects that the two population variances may be equal.
(h) The manner in which the data are collected indicates whether a two-sample data set is paired or unpaired.
(i) For the analysis of two independent samples using the unequal variances procedure, the value obtained from the formula for the degrees of freedom should be rounded down to the nearest integer.