A state tracks a variety of performance measures including: the number of childhood immunizations given each year, the preventive dental care given in two age ranges (3-21 years and 21+ years), and blood lead toxicity in infants ages 0 - 72 months. The following data, covering the past 11 years, is based on blood level toxicity in infants. This information is for one county only, which samples 25,075 infants each year. Create a p chart.

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The Answer is

\begin{array}{ll}25,075 & 4,702 \25,075 & 4,563 \25,075 & 4,821 \25,075 & 5,120 \25,075 & 4,860 \25,075 & 4,952 \25,075 & 4,706 \25,075 & 3,760 \25,075 & 3,793 \25,075 & 3,992 \25,075 & 3,996\\hline275829&49,265\end{array}

ext { p-bar }=\frac{\sum n p}{\sum n}=\frac{49,265}{275,829}=0.18

\begin{array}{l}\mathrm{UCL}=0.18+3 \sqrt{0} .18(1-0.18 / 25075)=0.19 \\mathrm{UCL}=0.18-3 \sqrt{0} 0.18(1-0.18 / 25075)=0.17 \\end{array}

A State Tracks a Variety of Performance Measures Including: the Number