You have been asked to observe the office manager at Wolf Mountain Christian School to estimate the proportion of time she spends handling visitors to the school who stop by the office. Your 50 observations have revealed the following:

(a) Based on the preliminary data, calculate the proportion of time she spends handling visitors to the school who stop by the office.
(b) Calculate the sample size needed to estimate the proportion of time she spends handling visitors to the school who stop by the office. Assume a 95% confidence that the results will lie within 5% of the true value.

Question

You have been asked to observe the office manager at Wolf Mountain Christian School to estimate the proportion of time she spends handling visitors to the school who stop by the office. Your 50 observations have revealed the following:
  
(a) Based on the preliminary data, calculate the proportion of time she spends handling visitors to the school who stop by the office.
(b) Calculate the sample size needed to estimate the proportion of time she spends handling visitors to the school who stop by the office. Assume a 95% confidence that the results will lie within 5% of the true value.

Quizplus · Accepted Answer

The Answer of You have been asked to observe the office manager at Wolf Mountain Christian School to estimate the proportion of time she spends handling visitors to the school who stop by the office. Your 50 observations have revealed the following:
  
(a) Based on the preliminary data, calculate the proportion of time she spends handling visitors to the school who stop by the office.
(b) Calculate the sample size needed to estimate the proportion of time she spends handling visitors to the school who stop by the office. Assume a 95% confidence that the results will lie within 5% of the true value.

You Have Been Asked to Observe the Office Manager at Wolf