(Solved): I have solved #1 1. The pediatrics department in a hospital is work sampled over a total of 608 hou ...

I have solved #1

1. The pediatrics department in a hospital is work sampled over a total of 608 hours. The results are shown below. There are 1578 observations. Find the percentage of occurrences for each category and the element hours for each category. 2. In example-2 given in the material if the relative accuracy is changed to \( 2.5 \% \). a. How many observations are needed? b. What happens to the number of observations required, as the relative accuracy becomes less? (\% change) 3. To get a \( 0.10 \) interval on work observed by work sampling that is estimated to require \( 70 \% \) of all the worker's time, how many random observations will be required at the \( 95 \% \) confidence level? 4. Repeat problem-3 for \( 85 \% \) confidence level.