A Random Sample of 100 Students Were Randomly Selected from Your

question 18

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 95% bootstrap confidence interval for the true average grade of all students at your school.

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

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Definitions:

Primary Key Field

A unique identifier for each record in a database table, ensuring no duplicates exist.

One-to-many Relationship

A database relationship where a single record in one table is linked to multiple records in another table.

Criterion >=100

A condition used in data filtering or selection processes specifying that only records with values greater than or equal to 100 should be included.

Structured Query Language (SQL)

A standardized programming language used to manage and manipulate relational databases.