Personal identification number (PIN) pads are devices that connect to point-of-sale electronic cash registers for debit and credit card purchases. Recall that for the 12 manufacturers listed in the table, a total of 334,039 PIN pads were shipped. Suppose you randomly select one of these PIN pads and identify the manufacturer.
For Information: Refer to The Nilson Report (Oct. 2008) listing of the volume of PIN pad shipments by manufacturers worldwide, Exercise 2.7.

a. Find the probability that the PIN pad is shipped by either Fujian Landi or SZZT Electronics.
b. Suppose that 1,000 of the PIN pads shipped were found to be defective. Find the probability that the PIN pad selected is one of the defectives.

Transcribed Image Text:

Manufacturer Number Shipped (units) Bitel CyberNet Fujian Landi Glintt (ParaRede) Intelligent Kwang Woo Omron Pax Tech ProvencoCadmus SZZT Electronics Toshiba TEC Urmet 13,500 16,200 119,000 5,990 4,562 42,000 20,000 10,072 20,000 67300 12,415 3,000