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)

---

Definitions:

Trader's Margin

The amount of equity contributed by a trader as a percentage of the current market value of the securities held in a trading account.

Established Value

The perceived worth or market value of an asset or company that has been recognized by investors or markets.

CFTC

The Commodity Futures Trading Commission, a United States federal agency that regulates the futures and options markets.

Futures Markets

Exchange-traded markets where participants buy and sell contract agreements on commodities or financial instruments for future delivery.