Iris Has Been Asleep for Less Than an Hour

question 157

Multiple Choice

Iris has been asleep for less than an hour.Her parents are surprised when she walks into the living room,and they tell her to go back to sleep.The next day Iris does not remember getting up after she went to bed.From this description,what did Iris experience

• A) a night terror 
• B) somnambulism 
• C) REM sleep behaviour disorder 
• D) a nightmare

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Definitions:

Distribution

Refers to the way in which something is shared out among a group or spread over an area.

Alternative Hypothesis

The hypothesis that proposes there is a statistically significant difference between two or more sets of data, contrasting the null hypothesis.

Region of Rejection

The range of values for which the null hypothesis is rejected in favor of the alternative hypothesis in hypothesis testing.

p < .05

Indicates that the probability of the observed data occurring under the null hypothesis is less than 5%, suggesting statistical significance.