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Answer: D) 4</h3>
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Explanation:
The width of the confidence interval is 20-12 = 8 units. That cuts in half to get 8/2 = 4 which is the margin of error.
The center of the confidence interval is (12+20)/2 = 32/2 = 16. Add four onto this to get 16+4 = 20, which is the right endpoint. Subtract four from the center to get 16-4 = 12, which is the left endpoint.
Effectively, it's like saying "an archer aims for the value 16 on the number line, and the arrow could land as high as 20 or as low as 12".
The amount of $700,000 is advisable to be deposited in three different banks for safety of Angelo's money.
<h3>What is a bank deposit?</h3>
A deposit of money made with a bank to earn returns in the form of interest on such money is known as a bank deposit. The banks insure such deposits up to a certain limit, say $250,000.
Angelo can distribute his money into three different banks, with each deposit not exceeding $250,000 to ensure the safety of his bank deposits.
Hence, the way to insure the safety of Angelo's money via bank deposit is aforementioned.
Learn more about bank deposit here:
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