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A. This study that the manufacturer is carrying out meets the necessary conditions for constructing a C.I.
b. Changing from a 95 percent CI to 98% C.I would make it more possible for us to capture the value so this means it would be wider.
c. A larger sample is going to make [tex]\frac{s}{\sqrt{n} }[/tex] to be smaller. This is due to the fact that the value we are dividing with has become larger. So the sample would get to be narrower.
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