A researcher selects a pair of random samples. In Group 1 the scores are 10, 4, 12, 5, 4, 6, 8, 7. In Group 2 the scores are 6, 4, 9, 3, 2, 5, 7, 4
a. Find the t ratio
b. As a two-tail t, should Ho be rejected?
If rejected, state the probability of the alpha error.
c. Do the two groups represent a single population?
a t=1.543
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a. True b. False
Seventeen-year-old Alice drinks alcohol to deal with all the things that are difficult in her life. Which approach is most likely to decrease her alcohol use?
a. engaging in therapy to learn coping skills b. learning about alcohol use in school c. practicing strategies to resist peer pressure d. having her parents take parenting classes
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Answer the following statement true (T) or false (F)
Dr. Broca wants to measure the intelligence of children between the ages of 6 and 11 years old. Assuming he can put the brains back into their heads with no harm to the children, which of the following methods will give him the most accurate results?
A) Weighing the brains B) Measuring the size (or volume) of the brains C) Inspecting the rate at which the synapses are being generated and pruned D) Measuring the thickness of the frontal and temporal lobes