• # question_answer If one state occurred four times in hundred observations while using the work-sampling technique, then the precision of the study using a 95% confidence level will be: A) 90%                             B) 92%C) 95%                             D) 98%

${{S}_{p}}=K\sqrt{\frac{p(1-p)}{N}}$ $K=2$ for 95% confidence level $S\times 0.04=2\sqrt{\frac{0.04\times 0.96}{100}}=0.0392$ $S=0.98\,\,or\,\,98%$