An Experiment Was Conducted to Determine the Effectiveness of a Method

question 118

Multiple Choice

An experiment was conducted to determine the effectiveness of a method designed to remove oil wastes found in soil. Three contaminated soil samples were treated. After 95 days, the percentage of contamination removed from each soil sample was measured, with a mean of 49.3 percent and a standard deviation of 1.5 percent. Estimate the mean percentage of contamination removed at a 98 percent confidence level.

• A) [48.36, 50.24]
• B) [43.27, 55.33]
• C) [47.29, 51.31]
• D) [47.88, 50.72]
• E) [46.47, 52.13]

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Definitions:

Future Business

Operations, activities, or engagements that a company plans to undertake in coming periods to increase its profitability and growth.

Current Assets

Resources anticipated to be turned into cash, sold, or used up within a timeframe of one year or during the usual business cycle if it extends beyond a year.

Office Supplies

Items used in offices for daily operations, including paper, pens, and staplers.

Cash

Liquid assets held by a company or an individual, used for the purpose of transactions or as a means to settle debts.