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

question 115

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 1% significance level,does the evidence support the Boston public schools' claim?

• A) No,because the p-value is greater than α.
• B) Yes,because thep-value is greater than α.
• C) No,because the value of the test statistic is less than the critical value.
• D) Yes,because the value of the test statistic is less than the critical value.

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Definitions:

Behavior Genetics

Behavior genetics is a field of study that examines the role of genetic and environmental influences on behaviors.

Individual Differences

Variations among individuals in their psychological traits, behavioral responses, or physical characteristics.

Evolutionary Perspective

A theoretical approach in psychology that explains human thoughts, feelings, and behaviors through the lens of natural selection and adaptation.

Ancestors' Genes

The genetic information passed down from forebears to descendants, influencing their traits and characteristics.