A pilot study<span>, </span>pilot<span> project or </span>pilot<span> experiment is a small scale preliminary </span>study<span>conducted in order to evaluate feasibility, time, cost, adverse events, and effect size (statistical variability) in an attempt to predict an appropriate sample size and improve upon the </span>study<span> design prior to performance of a full-scale ...
hope i helped!</span>
for number 19, figure out the exponents then multiply.
for scientific notaintion you figure out how many numbers are behind the decimal , then do that number as an exponient to 10 then multiply by that number. i hope i made a bit of sense. if not look at kahn academy for help !
