Find the Confidence Interval

question 3

Multiple Choice

Find the confidence interval.
-A large software development firm recently relocated its facilities. Top management is
Interested in fostering good relations with their new local community and has encouraged
Their professional employees to engage in local service activities. They wish to
Determine the average number of hours the firm's professionals volunteer per month. A
Random sample of 24 professionals yields a mean of 16.6 hours and a standard deviation
Of 2.22 hours. The 95% confidence interval is

• A) 14.62 to 15.78 hours.
• B) 14.38 to 18.82 hours.
• C) 14.95 to 18.25 hours.
• D) 15.66 to 17.54 hours.
• E) 16.04 to 17.16 hours.

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Definitions:

Negative Stereotypes

Oversimplified and harmful assumptions about a specific group of people that often contribute to prejudice and discrimination.

Ethnic Group

A community of people who share a common cultural background, heritage, language, or lineage.

Language Development

The process by which individuals acquire the ability to perceive, produce, and use words to communicate effectively, a critical aspect of cognitive and social development.

Development

The pattern of movement or change that begins at conception and continues through the life span.