Answer:
randomization creates validity in research experiments
Explanation:
According to the information provided within the question it seems that the most important reason for this is that randomization creates validity in research experiments. By making the assignments random you increase the odds of creating two groups of 30 families that are as similar to each other as possible, thus drastically increasing the odds that the detergent is the only different variable in all the families of each group. Therefore increasing the validity of the results.
Maricella's pattern of shirt completion is most likely to be rapid shirt completion with a short break after each five completed.
<u>Explanation:</u>
In the given case, Maricella would get $1 for each shirt that she completes sewing and the condition is that every-time she completes sewing 5 shirts she has to dump them into a bin and then she gets paid.
Her remuneration that is, $5 for five shirts is the motivation factor that drives her to work rapidly as possible. And moreover, she would take rest only after sewing 5 complete shirts as she's bound by the fact that she will get paid only if she complete 5 shirts and dumps it into the bin.
Therefore, we can easily come to conclusion that the working pattern of Maricella would be to take short breaks after quickly sewing 5 complete shirts.
I don’t know but it was probably because trading is easier than toiling and farming. There are many risks to farmings than there was in trading.
