A Random Sample of 100 Students Were Randomly Selected from Your

question 5

Multiple Choice

A random sample of 100 students were randomly selected from your school and their average grade was recorded,as a percentage,for the 2010/2011 school year.In order to compute a bootstrap confidence interval for the mean,200 subsequent bootstrap samples were taken and the 200 resulting sample means were ordered from lowest to highest.The first 10 and last 10 ordered means are given below: First 10: 59.41,59.56,60.13,60.44,61.22,61.67,62.45,62.48,62.56,63.01
Last 10: 78.13,78.25,78.67,79.12,79.33,80.57,80.98,81.88,81.99,82.71
Use the percentile method to compute a 90% bootstrap confidence interval for the true average grade of all students at your school.

• A)(60.44,80.98)
• B)(61.22,80.57)
• C)(63.01,78.13)
• D)(61.22,79.33)
• E)(61.67,80.57)

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Case Study

A detailed examination of a single subject (individual, group, or event) typically used for exploratory, explanatory, or descriptive research.

Neurological Trauma

Physical injury to the nervous system, which can result in temporary or permanent damage.

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The capacity for holding a small amount of information in an active, readily available state for a short period.

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A proposed explanation made on the basis of limited evidence as a starting point for further investigation.