7.66 Nuclear Power Plant The data in the EX0766 table are measures of the radiation in air particu- lates at a nuclear power plant. Four measurements were recorded at weekly intervals over a 26-week period. Use the data to construct an x chart and plot the 26 values of x. Explain how the chart can be used.

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Week Radiation 1 7 -234560FPSTERREN 68 0.031 0.032 0.030 0.031 0.025 0.026 0.025 0.025 0.029 0.029 0.031 0.030 0.035 0.037 0.034 0.035 0.022 0.024 0.022 0.023 0.030 0.029 0.030 0.030 0.019 0.019 0.018 0.019 8 0.027 0.028 0.028 0.028 0.034 0.032 0.033 0.033 10 0.017 0.016 0.018 0.018 11 0.022 0.020 0.020 0.021 12 0.016 0.018 0.017 0.017 13 0.015 0.017 0.018 0.017 14 0.029 0.028 0.029 0.029 15 0.031 0.029 0.030 0.031 16 0.014 0.016 0.016 0.017 17 0.019 0.019 0.021 0.020 18 0.024 0.024 0.024 0.025 19 0.029 0.027 0.028 0.028 0.032 0.030 0.031 0.030 21 0.041 0.042 0.038 0.039 22 0.034 0.036 0.036 0.035 23 0.021 0.022 0.024 0.022 24 0.029 0.029 0.030 0.029 25 0.016 0.017 0.017 0.016 26 0.020 0.021 0.020 0.022