Question 3 o*Za/2 n = E Solve the following problem in stages: According to prior research, the amount of time a medical doctor spends with patients has a standard deviation of 3.6 minutes. Further...

THE ANSWER IS NOT 38 nor is it 37.961

Extracted text: Question 3 o*Za/2 n = E Solve the following problem in stages: According to prior research, the amount of time a medical doctor spends with patients has a standard deviation of 3.6 minutes. Further study is needed to estimate the true mean time medical doctors spend with their patients. If a researcher wants to be 96% confident that the estimate is within 1.2 minutes of the population parameter, what is the minimum sample size necessary for such findings? [COMMENTS & HINTS: Round up!] Next, in order to determine the critical value, Za/2, using appropriate software or spreadsheet functions, such as =NORM.S.INV, what percentage should be entered to represent the left tail area under the standard normal curve? Express as a whole percentage with percent symbol.