The Following Data Approximate the Results Obtained by Subjecting Hela-S

question 69

Essay

The following data approximate the results obtained by subjecting Hela-S cells to 250 kvp x-rays: $$\begin{array} { | l | c | c | c | c | c | c | c | c | c | c | c | } \hline \text { Dose (rads) } & 0 & 100 & 150 & 200 & 250 & 300 & 400 & 450 & 500 & 550 & 600 \\\hline \text { Fraction Surviving } & 1 & 0.5 & 0.4 & 0.3 & 0.17 & 0.13 & 0.03 & 0.02 & 0.01 & 0.006 & 0.005 \\\hline\end{array}$$ Assume that these data fit an exponential model.(a) Find the appropriate exponential model.(b) Add another line to the table using your population model for the given doses of radiation.(c) Compare the model entries to the given data and explain any discrepancy.

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