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Einarsen et al. (1998) selected an SRS of 935 assistant nurses from a Norwegian county with 2700 assistant nurses.A total of 745 assistant nurses (80%) responded to the survey.
A 20% of the 745 respondents reported that bullying occurred in their department. Using these respondents as the sample, give a 95% CI for the total number of nurses in the county who would report bullying in their department.
b What assumptions must you make about the nonrespondents for the analysis in (a)?
a sample of 9 production managers with over 15 years of experience has an average salary of 71000 and a sample standard
A representative of the environmental protection agency (EPA) wants to select samples from 10 landfills. The director has 15 landfills from which she can collect samples.How many different samples are possible?
test the given claim using the traditional method of hypothesis testing. assume that the sample has been randomly
Men the same age have mean height 69 inches with standard deviation 2.7 inches. What is the z-score for a woman who is 6 feet tall?
Two sample z-test for the difference between two population proportions
Show the histograms and calculate their means and variances and comment on your findings.
Pharmacies continually monitor their prescription filling process. A local pharmacy has noted that the time to fill a prescription for a generic antibiotic is normally distributed, with a mean of 13.3 minutes and a standard deviation of 2.8 minute..
What is the point estimate for the difference between the means of the two populations?
Find a 95% confidence interval for the population mean concentration of uric acid in this patient's blood. What is the margin of error?
Based on these data, what is the probability that next Christmas will be dry and based on the data,what is the probability that next Christmas will be rainy or cloudy and dry?
A ten year old survey found that the average income of sole proprietor CPA's was $74,914. To update this information, a new survey of 112 proprietor CPA's was taken and it showed a mean of $74,695.
Assume the observed value of the test statistic is 1.53. What is the smallest level for which there is sufficient evidence to reject H 0 (i.e. the p-value for this test)?
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