The pH in a reactor varies over the course of a day. Use least-squares regression to fit a sinusoid to the following data. Use your fit to determine the mean, amplitude, and time of maximum pH.
Time, h | 0 | 2 | 4 | 5 | 7 | 9 | 12 | 15 | 20 | 22 | 24 |
pH | 7.6 | 7.2 | 7 | 6.5 | 7.5 | 7.2 | 8.9 | 9.1 | 8.9 | 7.9 | 7 |
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