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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,

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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