If You Wish to Estimate the Difference Between Two Population

question 43

Multiple Choice

If you wish to estimate the difference between two population means when the population variances are known, the 90% confidence interval estimate can be developed using which of the following critical values of z?

• A) 2.33
• B) 1.28
• C) 1.96
• D) 2.58
• E) 1.645

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Definitions:

Cyanosis

A bluish discoloration of the skin resulting from poor circulation or inadequate oxygenation of the blood.

Intubation

The insertion of a tube into the body, typically to provide a passageway for air to enter and exit the lungs during anesthesia or severe illness.

Trachea

The windpipe, a tube extending from the larynx towards the lungs, providing the passage of air to the respiratory system.

Larynx

The part of the respiratory tract located in the neck that houses the vocal cords and is involved in breathing, speech, and swallowing.