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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.
Are sex and party affiliation related? Report the appropriate null and research hypotheses and the critical value (alpha = 0.05). In addition, provide your statistical conclusion, including calculation of test statistic and what the data suggests in ..
You are the production manager of a company. Parachutes are woven in your factory using a synthetic fiber purchased from one of four different suppliers. The most important outcome for parachutes is strength of the fabric.
People arrive at a restaurant at a rate of five per minute and wait to receive their order for an average of 5 mins. Customers eat in with a probability of 0.5 and carry out with a probability of 0.5.
Plot the means versus the platform type. Does there appear to be a difference in pricing?- Is it reasonable to assume that the variances are equal? Explain.
let x1 x2 be a random sample of size 2 from a population x with exmu and vx 36. let t1 2x1 x23 and t2 3x1 - x23 be
At the 0.025 level, is age group independent of name-brand/generic specification? Based on the chi-square table, what is the most accurate statement that can be made about the p-value for the test?
Calculate the mean, median, and standard deviation for ounces in the bottles and construct a 95% Confidence Interval for the ounces in the bottles.
The average salary for a certain profession is ?$75,500. Assume that the standard deviation of such salaries is ?26,000. Consider a random sample of 66 people
A) Formulate the null and alternative hypothesis B) Find the test statistic c) Find the P value
The distribution of changes ranges from 20 to 5 beats per minute, with a mean of 9.7.
steve and his friends are relaxing at a local tavern. the number of drinks that steves table receives is poisson
In a clinical study of an allergy drug, 103 of the 202 subjects reported experiencing significant relief from their symptoms. At the 0.01 significance level
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