Answer:
i think it is C
Step-by-step explanation:
i think C because when you mutiply
The sum of a number and three is (n+3)
The difference of 8 and the number is (8-n)
And if we multiply them we get:
(n+3)(8-n) if you wanted it expanded...
8n-n^2+24-3n
-n^2+5n+24
A. 0.98=.980 is true because the zero doesn't change the value, it is simply a place holder. If you add a 0 to 0.98, it becomes 0.980, so it is the same number.
This question is incomplete.
Using the z-distribution, it is found that a sample size of 3,385 is required.
<h3>What is a confidence interval of proportions?</h3>
A confidence interval of proportions is given by:
The margin of error is:
In which:
- is the sample proportion.
In this problem, we have a 98% confidence level, hence, z is the value of Z that has a p-value of , so the critical value is z = 2.327.
We have no prior estimate, hence is used, which is when the largest sample size is needed. To find the sample size, we solve the margin of error expression for n when M = 0.02, hence:
n = 3,385.
A sample size of 3,385 is required.
More can be learned about the z-distribution at brainly.com/question/25890103
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