What is the value of your test statistic? What is the approximate critical value? What can the researcher conclude from the sample?
A psychologist wants to know if the average length of courtship is different before a second marriage than before a first. Based on previous research, it is known that for courtship before first marriages, ? = 200 days. The psychologist collects a sample of 150 people who have just been married for a second time and finds in her sample a mean of 225 days and standard deviation of 25 days.
Ans: 
The test statistic of t = 12.25 exceeds the critical value of + 1.96; therefore, we reject the null hypothesis and conclude that courtship before a second marriage is longer than before a first marriage.
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Which of the following is NOT true regarding the intense research into determining the etiology or causes of learning disabilities?
a. It remains an elusive goal b. Not much concrete evidence exists into the etiology of learning disabilities c. There appear to be multiple etiological possibilities d. In most instances the causes of a person’s learning disability can be discovered through intensive observation.
Mr. Bradley saw Ian grab Gracie’s book and throw it under a bush. He pulled Ian aside and told him what he saw. When Ian pouted and said he was sorry, Mr. Bradley said “That’s not enough. You go apologize to Gracie and then get her book and give it back to her since you are the one who put it outside.” This is an example of ______.
a. providing activities that make children aware of emotions b. seeking multiple alternatives for social problems c. using other-oriented reasoning d. expecting accountability
Most problem readers are referred because they have
a. attention problems. b. comprehension problems. c. a slow reading rate. d. decoding problems.
The following individuals can make a formal prereferral request EXCEPT ________
A) teachers B) school specialists C) the student D) the family doctor