An Experiment Was Conducted to Determine the Effectiveness of a Method

question 40

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% and a standard deviation of 1.5%.Assume the percentage of contamination is normally distributed.If we wished to narrow the boundary around μ for a 98% confidence interval to within 0.5%,how many soil samples should be in our experiment?

• A)437
• B)33
• C)9
• D)6
• E)3

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Definitions:

Wireless Network

A network setup that allows devices to connect and communicate with each other without the need for physical cables, using radio waves.

Evil Twin Attack

An Evil Twin Attack is a security threat where a malicious Wi-Fi network mimics a legitimate one, tricking users into connecting to steal their data.

Access Point

An Access Point is a networking hardware device that allows other Wi-Fi devices to connect to a wired network.

Usernames

Unique identifiers chosen by users to represent themselves on digital platforms, websites, or online services.