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4 Why are interval estimates needed in addition to point estimates? a. The point estimate is not guaranteed to be the same as its counterpart,

4

Why are interval estimates needed in addition to point estimates?

a. The point estimate is not guaranteed to be the same as its counterpart, so a range of values of estimates is needed.

b. The point estimate is just a random guess as to its counterpart, so a range of values is needed to give confidence.

c. The point estimate is guaranteed to be the same as its counterpart, so a range of values of estimates is excessive.

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