I to Prevent Bias, the Level of Significance Is Selected

question 25

Multiple Choice

i. To prevent bias, the level of significance is selected before setting up the decision rule and
Sampling the population.
ii. The level of significance is the probability that a true hypothesis is rejected.
iii. If the critical values of the test statistic z are ±1.96, they are the dividing points between the areas
Of rejection and non-rejection.

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

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Definitions:

Perceptual Set

A mental predisposition to perceive one thing and not another, influenced by expectations, emotions, and culture.

Loch Ness Monster

A mythical creature said to inhabit Loch Ness in the Scottish Highlands, often described as large, long-necked, and with one or more humps protruding from the water.

Sensory Adaptation

The method through which sensory receptors decrease in sensitivity to unchanging stimuli, enabling people to concentrate on environmental variations.

Difference Threshold

The smallest detectable difference between two stimuli or the minimum change in stimulus intensity that can be sensed.