The Alvin Secretarial Service procures temporary office personnel for major corporations. They have found that 90% of their invoices are paid within 10 days. If a random sample of 12 invoices are selected:

a. What is the probability that all of the invoices will be paid within 10 days?

b. What is the probability that fewer than 3 of the invoices will be paid within 10 days?

Answer rating: 100% (QA)

Let X shows the number of invoices paid with in 10 days X has ... View the full answer