
Concept explainers
To find: the following is not one of the situations that must be fulfilled to execute inferences about slope of a regression line of a least-squares.

Answer to Problem 1PT
The
Explanation of Solution
There are 5 conditions to infer about the slope of a minimum least-squares line of regression: random. Normal, independent, random, Linear, Variance equal.
(a) Must be fulfilled, since that is the normal requirement.
(b) Must be satisfied, since it is the requirement of Equal variance.
(c) Must not be satisfied, since we do not require sample size limitations.
(d) Must be fulfilled because the Linear requirement is so.
(e) Must be fulfilled, because this is a Random requirement.
Hence, the correct option is (c)
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