The interest that Marcos will get is 50000.
<h3>How to calculate the interest?</h3>
The following can be deduced from the information given:
Principal = 50000
Interest rate = 12.5%
Time = 8 years
The simple interest will be:
= (PRT/100)
= (50000 × 12.5 × 8)/100
= 50000
The amount that will be obtained after 8 years will be:
= Principal + Interest
= 50000 + 50000
= 10000
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A rational number is defined as a number that can be written
as a ratio of whole numbers. If it can't then it isn't.
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If you know the chain rule
hence
Assuming that
Answer: The point estimate for the mean is 3.2% and the margin of error is 1.9% .
Step-by-step explanation:
The confidence interval for population mean is given by :-
, where E is the margin of error .
Given : A 90% confidence interval for the mean percentage of airline reservations being canceled on the day of the flight is (1.3%, 5.1%).
Lower limit of the confidence interval : 
(1)
Upper limit of the interval : 
(2)
Adding (1) and (2) , we get
Now, Subtracting (1) from (2) , we get
Hence, the point estimate for the mean is 3.2% and the margin of error is 1.9% .
