The margin of error of the random selection is 0.20
The given parameters are:
--- the sample size
--- the standard deviation
--- the mean
--- the confidence level.
The margin of error (E) is calculated as follows:

So, we have:


The z-value for 99% confidence level is 2.576.
Substitute 2.576 for z


Take square roots

Multiply

Approximate

Hence, the margin of error is 0.20
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brainly.com/question/14396648
Answer:
C
Step-by-step explanation:
I don't have gotten any answer of this question
Answer:
x = c/(A + b)
A + b ≠ 0
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
Ax + bx = c
<u>Step 1: Solve for </u><em><u>x</u></em>
- Factor: x(A + b) = c
- Isolate <em>x</em>: x = c/(A + b)
We know that we cannot divide by 0, so A + b cannot equal 0.