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5- The proportion of adults audited by the IRS is known to be 1% for all...


5- The proportion of adults audited by the IRS is known to be 1% for all adults with a gross income of $100,000 to $200,000. In a random sample of 900 adults with income in this range, 11 of them were audited by the IRS. Are the conditions met to say that the sampling distribution of the sample proportion has a normal shape? If so, calculate the 90% confidence interval.
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