Families headed by married couples now make up about what percent of all households in the United States?
a. Less than 10%
b. About 25%
c. Slightly more than 50%
d. Slightly more than 65%
d
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Which of the following is not an item-writing rule for the creation of binary-choice items?
A. Include only a single concept in any statement. B. Phrase items so that a superficial analysis by students will suggest an incorrect answer. C. Rarely use statements containing double negatives, although single or triple negatives are acceptable. D. Keep item-length similar for both of the binary categories being assessed.
Twelve year old Nicole is becoming a capable writer but she doesn't think that she is making
progress. Of the following, the best way to help Nicole appreciate the progress she has made would be for her teacher to: a) hold an individualized conference with her b) ask her to complete all assignments at home c) encourage her to read her writing to a peer d) speak with Nicole's parents
What concerns should you have about Haley's sense of self?
What will be an ideal response?
What is the null and research hypothesis?
Jorge would like to examine the effects of fatigue on mental alertness. He prepares an attention test that requires subjects to sit in front of a blank TV screen and press a response button each time a dot appears on the screen. A total of 110 dots is presented during a 90-minute period, and Jorge records the number of errors for each subject. Two groups of subjects are selected. The first group of subjects is tested after they have been kept awake for 24 hours. The second group is tested in the morning after a full night’s sleep. The data for these two samples are as follows: AWAKE 24 HOURS RESTED Sample size = 10 Sample size = 10 Mean # dots detected: 25 Mean # dots detected: 35 Sum of Squares = 253 Sum of Squares = 310