Answer:
Step-by-step explanation:
To solve, divide.
This equals:
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What is the first step in solving a quadratic equation with the form given below (ax+b)^2=c
2 answers:
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Answer:
Margin of error = 0.773
Step-by-step explanation:
We are given the following information in the question.
Sample size, n = 20
Sample mean = 8
Sample standard deviation = 2
90% Confidence interval
Putting the values, we get,
Margin of error:
Putting the values, we get,