A wholesaler has recently developed a computerized sales invoicing system. Prior
ID: 2948971 • Letter: A
Question
A wholesaler has recently developed a computerized sales invoicing system. Prior to implementing this system, a manual system was used. The distribution of the number of errors per invoice for the manual system is as follows:
After implementation of the computerized system, a random sample of 500 invoices gives the following error distribution:
(a) Show that it is appropriate to carry out a chi-square test using these data.
Each Ei ?
Errors per Invoice 0 1 2 3 More Than 3 Percentage of Invoices 87% 6% 4% 2% 1%Explanation / Answer
a) For chi - square test to be appropriate, each expected frequency must be greater than or equal to 5.
Hence,
Each Ei > 5
Related Questions
Hire Me For All Your Tutoring Needs
Integrity-first tutoring: clear explanations, guidance, and feedback.
Drop an Email at
drjack9650@gmail.com
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.