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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%. For a level of significance of 5%, what should the researcher's decision rule look like?
A) Reject H0 if z is less than or equal to -1.645.B) Reject H0 if z is greater than or equal to 1.645.C) Reject H0 if z is less than or equal to -1.96.D) Reject H0 if z is greater than or equal to 1.96.
Why would a researcher wouldn't simply conduct three (or more) t tests? Type I error?
An insurance company looks at the records for millions of homeowners and sees that the mean loss from ?re in a year is μ = $300 per person.
A new teaching tool developed by the Allied Health department is claimed to help 68% of students learn at a faster pace. State the null and alternate hypothesis if:
What types of sources of capital can be employed in a transaction? Pick a single source of capital and describe why/under what circumstance you would use this type source.
Read the 2007 opinion of the Maryland Court of Appeals in the case of Barrie School v. Patch. Do you agree with the Court that this was a valid liquidated.
A Poisson distribution was fitted to data for the number of cars crossing a bridge in forty successive 6-minute intervals of time. The sample mean was calculated from the data to be ??¯ = 2.875 and this value was used as an estimate of the populat..
an airline believing that 7 of passengers fail to show for flights overbooks sells more tickets than there are seats.
If test scores are normally distributed, what is the minimum score required for an interview?
The professor wishes to use a random-number table to determine which letter choice should correspond to the correct answer for a question.
A study is conducted in order to determine the relationship between estrogen therapy and heart attack. Compute the cumulative incidence of heart attack in women who do take estrogen? Round to three decimal places
Write a complete second-order model for heat rate (y).- Fit the model to the data and give the least squares prediction equation.
A botanist wishes to test the null hypothesis that the average diameter of the flowers of a particular plant is 9.6 cm. He decides to take a random sample of size n = 80 and accept the null hypothesis if the mean of the sample falls between 9.3 cm..
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