Furnace Repair Bills Are Normally Distributed with a Mean of 267

question 28

Multiple Choice

Furnace repair bills are normally distributed with a mean of 267 dollars and a standard deviation of 20 dollars.If 64 of these repair bills are randomly selected, find the probability that they have a mean cost between 267dollars and 269 dollars.

• A) 0.2881
• B) 0.7881
• C) 0.2119
• D) 0.5517

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Definitions:

Generalist Intervention Model

A practice model in social work that guides professionals through a multistep process to assess cases, plan interventions, implement change strategies, and evaluate outcomes for individuals, families, groups, and communities.

Planning Phase

The initial stage of a project or strategic process where goals are defined, and methods for achieving them are devised.

Prioritizing Problems

The process of arranging issues or challenges in order of importance or urgency to effectively manage and address them.

Critical Thinking

is the process of actively analyzing, assessing, and synthesizing information to form a reasoned judgement.