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3. It is believed that the lower than normal level of human calcitonin (HCT) in men with rheumatoid arthritis is a risk factor in developing

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3. It is believed that the lower than normal level of human calcitonin (HCT) in men with rheumatoid arthritis is a risk factor in developing osteoporosis. In 64 men with rheumatoid arthritis, the observed HCT mean was 32.5pg/mL with a standard deviation of 23.6. In normal healthy men, the mean was 47.9pg/mL. From the sample information, can we conclude that the HCT mean in men with rheumatoid arthritis is less than that in normal men? Assume a signicance level of 0.05

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