Seventy-Five Percent of the Computers Sold by a Certain Store

question 28

Multiple Choice

Seventy-five percent of the computers sold by a certain store are laptops. Among 150 randomly selected computer purchases, what is the approximate probability that at most 125 are laptops? What is the approximate probability that between 100 and 120 (inclusive) are laptops? ​

• A) ; .
• B) ; .
• C) ; .
• D) ; .
• E) ; .

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Definitions:

Wired Network

A type of network where devices are connected using cables, offering more stability and security compared to wireless connections.

Traditional Phone Network

The landline telephone system, also known as the public switched telephone network (PSTN), which uses copper wires to transmit voice communication.

DSL

Digital Subscriber Line, a family of technologies that provide internet access by transmitting digital data over the wires of a local telephone network.

56K Modem

A type of modem used for dial-up internet access, allowing data transmission speeds up to 56 kilobits per second.