We have given a likely range for the observed value of a sample proportion P. a. Based
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We have given a likely range for the observed value of a sample proportion P̂.
a. Based on the given range, identify the educated guess that should be used for the observed value of P̂ to calculate the required sample size for a prescribed confidence level and margin of error.
b. Identify the observed values of the sample proportion that will yield a larger margin of error than the one specified if the educated guess is used for the sample-size computation.
0.4 to 0.7
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