A random sample of 328 medical doctors showed that 160 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 99% confidence interval for p. (Use 3 decimal places.) lower limit   upper limit    What is the margin of error based on a 99% confidence interval? (Use 3 decimal places.)

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A random sample of 328 medical doctors showed that 160 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 99% confidence interval for p. (Use 3 decimal places.)
lower limit  
upper limit  
 
What is the margin of error based on a 99% confidence interval? (Use 3 decimal places.)
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