Confidence level is a degree of confidence expressed as percents like 90%, 95% and 99% prior assigned to the data before the confidence interval is calculated.
In modern business practice, a letter of credit (LC) also known as a Documentary Credit, is a written commitment by a bank issued after a request by an importer (foreign buyer) that payment will be made to the beneficiary (exporter) provided that the terms and conditions stated in the LC been met, as evidenced by the presentation of specified ...
A commercial letter of credit is a contractual agreement between a bank, known as the issuing bank, on behalf of one of its customers, authorizing another bank, known as the advising or confirming bank, to make payment to the beneficiary. The issuing bank, on the request of its customer, opens the letter of credit. The issuing bank makes a commitment to honor drawings made under the credit. The beneficiary is normally the provider of goods and/or services. Essentially, the issuing bank replaces the bank's customer as the payor.