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A researcher suspects that the actual prevalence of generalized anxiety among children and adolescents is higher than the previously reported prevalence of generalized anxiety disorder among children and adolescents. The previously reported prevalence of generalized anxiety disorder among children and adolescents is 3.9%, and the researcher conducts a study to test the accuracy of the previously reported prevalence of generalized anxiety disorder by recruiting 98 children and adolescents from various pediatricians' offices and tests them for generalized anxiety disorder using the DSM-5. The researcher determines that the prevalence of generalized anxiety disorder among the participants of the study is 6.1%. Calculate the z value for the test statistic.
Obtain a graphical representation of the relationship and give a brief description of the relationship and estimate the simple regression line and interpret the estimated relationship.
An entrepreneur wishes to enter the amusement park business. She is choosing between two strategies:
Distinguish among classical or a priori probability, relative frequency or empirical probabil- ity, and subjective or personalistic probability. What is the disadvantage of each?
Find the sample size for the 95% confidence interval used to estimate the population proportion.
What is the probability that a randomly selected big-screen television purchase in this sample is a purchase of a plasma-screen television?
What are the 3 required assumptions for the appropriate use of the independent grp.T-test?
A delivery truck averages 15 miles per gallon, with a standard deviation of 3 miles per gallon, and that fuel consumption is Normally Distributed.
10 squirrels were found to have an average weight of 9.6 ounces with a sample standard deviation is 0.30. find the 99
The kernel of a joint continuous distribution is x2y3 on [0, 1]2. a) Determine the pdf.
In July of 2004, the Gallup Poll asked 1005 U.S. adults if they actively try to avoid carbohydrates in their diet. That number increased to 27% from 20% in a similar 2002 poll. Is this a statistically significant increase? Explain.
Contact a weatherperson and ask him or her what this statement means. Does this explanation agree with yours?
There are 130 cabinets in a row in a warehouse. The first worker to arrive opens the door of every cabinet. The next employee visits every other door and closes it.
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