Sampling Distribution
A computer scanner can read a bar code on a package correctly 97% of  the time. One company monitors the accuracy of the scanner by randomly  sampling packages and verifying that each package has been correctly  scanned. 
Random samples of size n = 25, 50, 100, and 200 have recently  been taken with the following results.
      Sample Size, n        Number Correctly Scanned    
          25                                             24
          50                                             49
         100                                            95 
         200                                           193   
To complete this activity, use Excel to:

Calculate the sample proportion for each sample size. 
Calculate the single-proportion sampling error for each sample size. 
Calculate the probability of finding 198 correctly scanned packages, for a sample of size n=200. 
Submit your work Excel file.

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