(See Steps) people were surveyed and 310 said that they favor a referendum to raise taxes to pay for a new gymnasium. Assuming a 90% level of confidence,
Question: 400 people were surveyed and 310 said that they favor a referendum to raise taxes to pay for a new gymnasium. Assuming a 90% level of confidence, find the margin of error, to the nearest tenth of a percent, associated with the sample proportion.
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