Explain the Role of Margin of Error in Constructing a Confidence

question 42

Multiple Choice

Explain the Role of Margin of Error in Constructing a Confidence Interval
-Suppose a 95% confidence interval for turns out to be (130, 300) . To make more useful inferences from the data, it is desired to reduce the width of the confidence interval. Which of the following will result in a reduced interval width

• A) All of these.
• B) Increase the sample size.
• C) Decrease the confidence level.
• D) Increase the sample size and decrease the confidence level.

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Definitions:

Capture Prey

The act or process by which an organism secures another organism for food.

Bilateral Symmetry

Having paired structures so the right and left halves of an object are mirror images.

Flatworms

A group of simple, soft-bodied invertebrate animals belonging to the phylum Platyhelminthes, characterized by their flat, bilaterally symmetrical bodies and lack of specialized respiratory and circulatory systems.

Cnidarians

A phylum of aquatic animals that includes jellyfish, corals, and sea anemones, characterized by a simple body structure with a single opening.