Standard deviation for the resting heart rates of ECC students was 12 bpm. The actual sample data is as follows heart rate 61 63 64 65 65 67 71 72 73 74 75 77 79 80 81 82 83 83 84 85 86 86 89 95 95 Based on this sample, is there enough evidence to say that the standard deviation of the resting heart rates for students in this class is different from 12 bpm? Use a significance level of 0.05.

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