Select the correct answer from each drop-down menu.
A researcher is examining the claims made by a water softener salt manufacturer. He performs an experiment using
each water source, he has a sample with no treatment and a sample treated with the recommended amount of the
water from a variety of sources. For
water softener salt.
He then tests each sample to measure the softness and compares the results, determining that the claims made by the manufacturer are true.
The conclusion drawn from the study is
performed.
v because the sample is
biased
unbiased
• In this instance, an
appropriate
inappropriate
study was.