SOLUTION: In each parts (a)-(c), we have given a likely range for the observed value of a sample proportion p. Based on the given range, identify the educated guess that should be used for t

Question 270708: In each parts (a)-(c), we have given a likely range for the observed value of a sample proportion p. Based on the given range, identify the educated guess that should be used for the observed value of p to calculate the required sample size for a prescribed confidence level and margin of error.
a. 0.4 to 0.7
b. 0.7 or greater
c. 0.7 or less
d. In each of parts (a)-(c), which observed values of the sample proportion will yield a largin margin of error than the one specified if the educated guess is used for the sample size computation?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In each parts (a)-(c), we have given a likely range for the observed value of a sample proportion p.
Based on the given range, identify the educated guess that should be used for the observed value of p to calculate the required sample size for a prescribed confidence level and margin of error.
a. 0.4 to 0.7
Edu. Guess: p = (0.7+0.4)/2 = 0.55
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b. 0.7 or greater
Edu. Guess: (1+0.7)/2 = 0.85
--------------------------
c. 0.7 or less
Edu. Guess: (0+0.7)/2 = 0.35
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d. In each of parts (a)-(c), which observed values of the sample proportion will yield a larger margin of error than the one specified if the educated guess is used for the sample size computation?
????
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Cheers,
Stan H.
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