Toss # (hr) Number of Radioactive Nuclei Toss # (hr) Number of Radioactive Nuclei 80 9 3 - O 50 10 2 2 34 11 2 19 12 4 8 13 5 14 0 4 15 3 16 8 171. In the Calculations section of your report, give an estimate of the time the first 4 half- lives occurred on a running time basis. 2. From the above times, write down the 4 individual half-life times by making appropriate running time subtractions. For example, the 4th half-life estimate will come from subtracting the time when the 3'd half-life occurred from time when the 4th half-life occurred. In this way, all 4 half-life times should be similar. 3. Determine the average half-life, and calculate the decay constant using the final equation shown in the Introduction. Don't forget units. 4. In the Error Analysis section, provide an average and standard deviation (uncertainty range) for your half-life in hours from the 4 (or 5) individual half-lives. 5. Determine the precision level of your half-life data. In other words, divide the standard deviation into the average half-life value and put in percentage form. What might account for this variation, and what could you do differently in the experiment to improve this value? Include this discussion in your Error Analysis