Ross Et Al

question 2

Multiple Choice

Ross et al. found that when given a negative message about bathing or tooth brushing, participants:

• A) increased their tooth brushing.
• B) decreased their tooth brushing.
• C) recalled brushing fewer times than participants who heard the positive message.
• D) changed their attitude to a more positive one about personal hygiene.

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Definitions:

Null Hypothesis

A default hypothesis that there is no effect or no difference, used as a starting point for statistical testing.

µ = 3

A notation indicating that the mean (average) of a certain dataset or population is equal to 3.

'>' Symbol

A mathematical symbol denoting that the value on the left is greater than the value on the right.

Alternative Hypothesis

The hypothesis that proposes a difference or effect, in contrast to the null hypothesis, which asserts no effect or relationship.