A Consumer Group Would Like to Estimate the Mean Monthly

question 122

Multiple Choice

A consumer group would like to estimate the mean monthly electricity charge for a single family house in July (within $5) using a 99 percent level of confidence. Based on similar studies the standard deviation is estimated to be $20.00. How large a sample is required?

• A) 105
• B) 106
• C) 107
• D) 108
• E) 109

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Definitions:

Stresses and Strains

Terms used in physics and engineering to describe the forces that cause deformation and the deformation itself in materials and structures.

Fatuous Love

A type of love that is defined by commitment and passion but lacks intimacy, often short-lived and lacks deeper understanding.

Intimacy

A close, familiar, and usually affectionate or loving personal relationship with another person or group.

Passion

Intense, driving, or overmastering feeling or conviction, often associated with love or enthusiasm for something.