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2 answers:
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Discount are used to reduce the costs of items
The percent paid to determine the advertisement is incorrect
<h3>How to determine the correct percentage</h3>The initial prices are given as: $44.00 to $152.00
And the discount is: 45% to 51%
At a discount of 45%, the price of the items would be:
At a discount of 51%, the price of the items would be:
The calculates prices show that the percent paid to determine the advertisement is incorrect
Read more about discounts at:
Answer:
C. 50
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
The margin of error is:
The higher the margin of error, the wider an interval is.
As the sample size increases, the margin of error decreases. If we want a widest possible interval, we should select the smallest possible confidence interval.
So the correct answer is:
C. 50
