The Quality Control Manager of a Major Cell Phone Provider

question 109

Multiple Choice

The quality control manager of a major cell phone provider is concerned about the life of the cell phone batteries they use.He took a sample of 13 batteries from a recent shipment and used them continuously until they failed to work.The manager measured the number of hours the batteries lasted and found the mean to be 550.4 with a standard deviation of 315.3.Calculate the appropriate test statistic to test the claim that the mean life of the batteries is more than 400 hours.

• A)6.20
• B)1.72
• C)0.477
• D)-6.20
• E)-1.72

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Definitions:

Cultural Emphasis

The prioritization of certain beliefs, values, customs, and behaviors within a culture, highlighting the characteristics that are considered most important or central to the group's identity.

Parenting Practices

The behaviors and strategies that parents use to raise their children, including disciplinary tactics, communication styles, and nurturing actions.

Group Harmony

The state of agreement, accord, or unity within a group of individuals, often seen as a goal in many collective cultures.

Socioemotional Competence

The ability to understand, manage, and express the social and emotional aspects of one's life.