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The Boston Public School District Has Had Difficulty Maintaining On-Time

question 43

Multiple Choice

The Boston public school district has had difficulty maintaining on-time bus service for its students ("A Year Later,School Buses Still Late," Boston Globe,October 5,2011) .Suppose the district develops a new bus schedule to help combat chronic lateness on a particularly woeful route.Historically,the bus service on the route has been,on average,12 minutes late.After the schedule adjustment,the first 36 runs were an average of eight minutes late.As a result,the Boston public school district claimed that the schedule adjustment was an improvement-students were not as late.Assume a population standard deviation for bus arrival time of 12 minutes.At the 5% significance level,does the evidence support the Boston public school district's claim?

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Definitions:

Health Psychology

A field of psychology that explores how biological, psychological, and social factors influence health, illness, and healthcare.

Psychosomatic

Pertaining to or involving both the mind and the body, specifically where psychological factors affect physical health in a significant or measurable way.

Infectious Diseases

Diseases caused by pathogenic microorganisms like bacteria, viruses, parasites, or fungi that can be spread, directly or indirectly, from one person to another.

Chronic Diseases

Long-lasting medical conditions that are generally progressive and can be controlled but not cured.

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