(I the Interval Estimate States the Range Within Which a Population

question 72

Multiple Choice

(i. The interval estimate states the range within which a population parameter probably lies.
(ii. The confidence interval is the interval within which a population parameter is expected to lie.
(iii) For a sampling distribution of the means, 95% percent of the means would be between ± 1.96
Standard deviations.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists.

Interval Estimate

An estimate of a population parameter that specifies a range of possible values.

Constituency

A body of voters in a specified area who elect a representative to a legislative body.

Significance Level

The probability of rejecting the null hypothesis when it is actually true, often denoted by alpha (α) and used as a threshold in hypothesis testing.