Question

Out of 20,000 customers ledger accounts, a
sample of 600 was taken to test the accuracy
of posting and balancing and 45 mistakes
were found, Assign limits which the number
of mistakes can be excepted at 95% level of
confidence.

Answer 1

Answer:

Grade 12. He produced 1-3/5 this year this is 1=5/5, +3/5 = 8/5 >> last year he produced 1/(8/5) =5/8 of this years production.