Which of the following accurately describes the critical region?
a. Outcomes with a very low probability if the null hypothesis is true
b. Outcomes with a high probability if the null hypothesis is true
c. Outcomes with a very low probability whether or not the null hypothesis is true
d. Outcomes with a high probability whether or not the null hypothesis is true
A
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Graham is 6 months old. How would you expect him to be feeding himself?
a. He is unlikely to be able to feed himself at all, so is likely to be completely dependent on adults to get fed. b. He's probably beginning to be able to pick up finger foods, but is likely to have difficulty getting them in his mouth. c. He can probably use a spoon to bring food to his mouth, but may keep his wrist rigid. d. He should be able to use a spoon to eat using the same motions as an adult uses.
A screening device is able to indicate a problem when it is present and accurately indicate the absence of a problem when none exists. In psychological terms, this would constitute
A) screening specificity. B) screening sensitivity. C) differential diagnosis. D) sensitivity and specificity.