Question: please help with question a and b 9.1.37 Question Help A researcher wishes to estimate the percentage of adults who support abolishing the penny. What

please help with question a and b

wishes to estimate the percentage of adults who support abolishing the penny.

What size sample should be obtained if he wishes the estimate to

be within 4 percentage points with 95% confidence if (a) he uses

a previous estimate of 25%? (b) he does not use any prior

9.1.37 Question Help A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 4 percentage points with 95% confidence if (a) he uses a previous estimate of 25%? (b) he does not use any prior estimates? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2).

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