Another survey was done at Center Hospital to determine how long (in months) clerical staff had been in their current positions. The responses (in months) of 20 clerical staff members were

$$\begin{array}{llllllllll} 25 & 22 & 7 & 24 & 26 & 31 & 18 & 14 & 17 & 20 \\ 31 & 42 & 6 & 25 & 22 & 3 & 29 & 32 & 15 & 72 \end{array}$$

(a) Make a box-and-whisker plot. Find the interquartile range.

What percentage of the general U.S. population have bachelor's degree? The Statistical Abstract of the United States, 120th Edition, gives the percentage of bachelor's degrees by state. For convenience, the data are sorted in increasing order.

$$\begin{array}{cccccccccc} 17 & 18 & 18 & 18 & 19 & 20 & 20 & 20 & 21 & 21 \\ 21 & 21 & 22 & 22 & 22 & 22 & 22 & 22 & 23 & 23 \\ 24 & 24 & 24 & 24 & 24 & 24 & 24 & 24 & 25 & 26 \\ 26 & 26 & 26 & 26 & 26 & 27 & 27 & 27 & 27 & 27 \\ 28 & 28 & 29 & 31 & 31 & 32 & 32 & 34 & 35 & 38 \end{array}$$

(b) Illinois has a bachelor's degree percentage rate of about 26%. Into what quarantine tile does this rate fall?

Consumer Reports rated automobile insurance companies and listed annual premiums for top-rated companies in several states. The given figure shows box-and-whisker plots for annual premiums for urban customers (married couples with one 17-year-old son) in three states. The box-and-whisker plots in Figure were all drawn using the same scale on a TI-84Plus/TI-83Plus/TI- $n$ spire calculator.

Which state has the highest median premium?

Consumer Reports rated automobile insurance companies and listed annual premiums for top-rated companies in several states. The given figure shows box-and-whisker plots for annual premiums for urban customers (married couples with one 17-year-old son) in three states. The box-and-whisker plots in Figure were all drawn using the same scale on a TI-84Plus/TI-83Plus/TI- $n$ spire calculator.

Which state has the lowest premium? The highest?

True or false. Staff training on health care compliance issues can be done individually or in groups.

An office manager is concerned with declining productivity. Despite the fact that she regularly monitors her clerical staff four times each day—at $9:00$ AM, $11:00$ AM, $1:00$ PM, and again at $3:00$ PM-office productivity has declined $30$ percent since she assumed the helm one year ago. Would you recommend that the office manager invest more time monitoring the productivity of her clerical staff? Explain.

The town of Butler, Nebraska, decided to give a teacher-competency exam and defined the passing scores to be those in the 70th percentile or higher. The raw test scores ranged from 0 to 100. Was a raw score of 82 necessarily a passing score? Explain.

One standard for admission to Redfield College is that the student must rank in the upper quartile of his or her graduating high school class. What is the minimal percentile rank of a successful applicant?

For Exercise given below, identify the five-number summary and find the interquartile range.

14.6,19.8,16.3,15.5,18.2

For Exercise given below, identify the five-number summary and find the interquartile range.

362,589,437,316,192,188

At General Hospital, nurses are given performance evaluations to determine eligibility for merit pay raises. The supervisor rates the nurses on a scale of 1 to 10 (10 being the highest rating) for several activities: promptness, record keeping, appearance, and bedside manner with patients. Then an average is determined by giving a weight of 2 for promptness, 3 for record keeping, 1 for appearance, and 4 for bedside manner with patients. What is the average rating for a nurse with ratings of 9 for promptness, 7 for record keeping, 6 for appearance, and 10 for bedside manner?

At Center Hospital there is some concern about the high turnover of nurses. A survey was done to determine how long (in months) nurses had been in their current positions. The responses (in months) of 20 nurses were

$$\begin{array}{cccccccccc} 23 & 2 & 5 & 14 & 25 & 36 & 27 & 42 & 12 & 8 \\ 7 & 23 & 29 & 26 & 28 & 11 & 20 & 31 & 8 & 36 \end{array}$$

Make a box-and-whisker plot of the data. Find the interquartile range.

For each demand equation, use implicit differentiation to find dp/dx. $x p^{2}=96$

Compute a 75% Chebyshev interval centered on the mean.