Judging from Recent Experience, 5 Percent of the Computer Keyboards

question 16

Multiple Choice

Judging from recent experience, 5 percent of the computer keyboards produced by an automatic, high-speed machine are defective. If six keyboards are randomly selected, what is the probability that none of the keyboards are defective?

• A) 0.001
• B) 0.167
• C) 0.735
• D) 0.500

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Definitions:

XIC

Examine If Closed, a command in ladder logic programming that checks if a specific input or point in a control system is in an ON state, signifying an electrical circuit is complete.

OTD

OTD stands for "On-Time Delivery," a key performance indicator measuring the success rate of delivering services or goods within the agreed timeframe.

XIO

Represents an "Examine if Open" instruction in ladder logic programming, used to check if a specified condition, such as a switch being open, is met.

NC Limit Switch

A normally closed limit switch designed to maintain contact until it is activated or triggered by the movement of a machine part, then interrupting the circuit.