SEE ATTACHED FILE – Error of the Sample Proportion
It has been reported that 42.6% of U.S. workers employed as purchasing managers are females. In a simple random sampleof U.S. purchasing managers, 70 out of the 200 are females. Given this information:
a. What is the population proportion, π?
b. What is the sample proportion, p?
c. What is the standard errorof the sample proportion?
d. In the samplingdistribution of the proportion, what is the probabilitythat a sample of this size would result in a sample proportion at least as large as that found in part (b)?
NOTE: Please use an Excel spreadsheet for response. Please do not just
provide the answers but show in complete detail how you arrived at the
answer, step-by-step, from the beginning to the end of the solution.
The solution provides step by step method for the calculation of probability using the Z score. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.