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A random sample of 322 medical doctors showed that 174 had a solo practice. (a) Let...

A random sample of 322 medical doctors showed that 174 had a solo practice. (a) Let p represent the proportion of all medical doctors who have a solo practice. Find a point estimate for p. (Use 3 decimal places.) (b) Find a 98% confidence interval for p. (Use 3 decimal places.) lower limit upper limit Give a brief explanation of the meaning of the interval. What is the margin of error based on a 98% confidence interval? (Use 3 decimal places.)

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