Helppp hurryyyy i don’t understand it
2 answers:
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Answer:
A. increase the size of the sample.
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 width of the interval is given by:
So as n(the size of the sample) increases, the width decreases.
If the researchers wanted to decrease the width of the con dence interval, they could
The correct answer is:
Increase n, that is
A. increase the size of the sample.