Answer:
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Step-by-step explanation:
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What is the question can't help with ought it
Answer:
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Answer:
Step-by-step explanation:
We are given the following in the question:
Significance level = 0.01
Width of interval = 0.1
Population variance = 
We have to find the sample size so that the width of the confidence interval is no larger than 0.1

Formula for sample size:

where E is the margin of error. Since the confidence interval width is 0.1,

Putting these values in the equation:

So, the above expression helps us to calculate the sample size so that the width of the confidence interval is no larger than 0.1 for different sample variances.
2(3)2 - 8 ÷ 2 + 6
(6) 2 - 8 ÷ 2 + 6
12 - 8 ÷ 2 + 6
12 - 4 + 6
8 + 6
14