In a Local Cellular Phone Area, Company a Accounts for 60

question 107

Multiple Choice

In a local cellular phone area, company A accounts for 60% of the cellular phone market, while company B accounts for the remaining 40% of the market. Of the cellular calls made with company A, 1% of the calls will have some sort of interference, while 2% of the cellular calls with company B will have interference. If a cellular call is selected at random, what is the probability that it will have interference?

• A) 0.014
• B) 0.986
• C) 0.14
• D) 0.028

Understand how and when to employ queries for data analysis, including the use of wizards and special query types.

Grasp the concept of multivalued fields and their management in Access databases.

Understand how to use the Calculation row in query design to group records and calculate values.

Learn the options available in the Top Values list and their implications on query results.

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Definitions:

Dry-Seal Suction Drainage

A medical system used to remove air, fluids, and pus from the body by applying controlled negative pressure.

Chest Tube

A flexible plastic tube inserted through the chest wall into the pleural space to remove air, blood, or fluid, helping the lung to re-expand.

Pulse Oximetry Reading

A measurement of oxygen saturation levels in the blood, typically obtained through a non-invasive device clipped to a thin part of the body, like a fingertip.

Emphysema

A chronic respiratory disease characterized by damage to the air sacs in the lungs, leading to breathlessness.