An independent-measures study with n = 6 in each sample, produces a sample mean difference of 4 points and a pooled variance of 12.What is the value for the t statistic?
A) ?1
B) ?2
C) ?4/6
D) ?4/8
B
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Why is it important for potassium ions (K+) to move out of the axon once an action potential has been fired?
a. ?Because their continued presence would be damaging to the tissues of the axon b. ?So that the neuron will have the ability to generate another action potential c. ?Because of the required binding with potassium (K+) to activate the refractory period d. ?In order to create a more negative charge outside rather than inside the neuron
To reduce the large number of surface traits to 16 source traits, Raymond Cattell used a statistical technique known as
a. factor analysis. b. the Likert scale. c. cumulative analysis. d. situational testing.
Which one of the following is an example of a false positive?
a. Mistakenly assuming guilty test takers are guilty b. Mistakenly assuming innocent test takers are innocent c. Mistakenly classifying guilty test takers as innocent d. Mistakenly classifying innocent test takers as guilty
Imagine you are a neurological researcher looking at a PET scan of a 16-year-old boy. Compared to the brain scan of an 8-year-old girl, you'd most likely see
a. increased frontal lobe. b. a larger cerebellum. c. decreased myelination. d. a smaller hypothalamus.