Over the past week, I measured the resting heartrates of 24 women ages 30 - 50 and got the  following data measured in beats per minute: 61, 63, 64, 65, 65, 67, 71, 72, 73, 74, 75, 77, 79,  80, 81, 82, 83, 83, 84, 85, 86, 86, 89, 95. My claim is that the variance of heart rates for women  ages 30 – 50 is different than 12 beats per minute. Is there enough evidence to support my  claim? Test at the 0.05 level of significance.

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