The Mean Life of a Particular Brand of Light Bulb

question 23

Multiple Choice

The mean life of a particular brand of light bulb is 1200 hours and the standard deviation is 50 hours.It can be concluded that at least 89% of this brand of bulbs will last between _______.

• A)1100 and 1300 hours
• B)1150 and 1250 hours
• C)1050 and 1350 hours
• D)1000 and 1400 hours
• E)950 and 1450 hours

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Definitions:

Tracheoesophageal Fistula

An abnormal connection between the trachea and the esophagus, which can lead to swallowing difficulties and respiratory problems.

Suctioning

A procedure used to remove bodily secretions from the airway by applying negative pressure through a tube.

Crohn Disease

A chronic inflammatory bowel disease that affects the lining of the digestive tract, causing pain, severe diarrhea, fatigue, weight loss, and malnutrition.

Ulcerative Colitis

A chronic inflammatory bowel disease characterized by inflammation and ulcers in the lining of the colon and rectum, leading to abdominal discomfort and bleeding.