Question: Another pilot study. During routine screening, a doctor notices that 22% of her adult patients show higher than normal levels of glucose in their blood

Another pilot study. During routine screening, a doctor notices that 22% of her adult patients show higher than normal levels of glucose in their blood a possible warning signal for diabetes. Hearing this, some medical researchers decide to conduct a large-scale study, hoping to estimate the proportion to within 4% with 98% confidence.

How many randomly selected adults must they test?

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