Which of the following is one of the limitations of mixed research?
a. Insights and understanding emerge that would not be evident with one method or the other
b. Broader and more research questions can be answered
c. Researchers need to be competent in qualitative and quantitative methodologies
d. One of the methodologies can provide feedback for the other method
Ans: c
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a. relative frequency b. mean c. cumulative frequency d. confidence interval
Cover letters should:
A) Have left-margin justification B) Have right-margin justification C) Both A and B D) None of the above
A national survey shows that Americans throw away an average of 65 recyclable items per week. A random sample of 85 residents in Beverly Hills is drawn and the mean is calculated. Given only this information, what formula would you use to determine if the mean of this sample is significantly different from the population mean?
a. z-test for single mean b. z-test for the difference between two independent means c. t-test for a single mean d. t-test for the difference between two independent means e. None of the above
There are approximately how many local school districts in the United States?
a. 5,000. b. 10,000. c. 15,000. d. 20,000.