If a statistics class has a distribution of grades with a mean of 70 and standard
deviation of 15, what is the probability of a student scoring between a 70 and 90?
a. .20
b. .41
c. .50
d. .61
B
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Answer the following statement(s) true (T) or false (F)
Posttraumatic stress disorder (PTSD) can occur as a result of cancer-related traumatic events.
What is the primary reason CBFT therapists use contracts?
A) To make sure the client comes to therapy consistently and pays on time B) To trick the client into thinking that something is required so they will work harder and take therapy seriously C) To force the client to work on the behaviors they want to target D) To give the client a sense of commitment to the process as well as motivate them
. If you use a question from a questionnaire that identifies a person as either male or female, you have a variable that is measured at what level?
A. interval B. nominal C. ordinal C. ratio
What is the biggest barrier to using random sampling?
a. It is often unethical. You should not have all participants have equal chances of being selected because some might not want to participate. b. It is only usable when the population is large. Thus, it is not useful for most research. c. It is often impractical as researchers usually do not have access to the entire population of interest to recruit them randomly. d. It is biased because the randomness makes it difficult to analyze the data that you collect.