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The ophthalmologist reviews fund us photographs 30 patients wtth macular degeneration both before and 3 month after receiving the laser treatment. To assess efficacy, of treatment, each patient is rated as enhanced, remained same, or declined.
If, 20 patients improved, 7 declined, and 3 remained same, assess whether or not patients undergoing this treatment are illustrating significant change from baseline to 3 months afterward. Report a p-value.
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
A partial computer output from a regression analysis as follows. The regression equation is:
If an applicant is randomly selected, find the probability of a rating that is between 200 and 275.
A random sample of 50 households revealed a mean of $112,000 and a standard deviation of $40,000. What is the standard error of the mean?
Describe meaning of alternatives, criteria and states of nature. Explain how are they utilized in decision analysis?
What information is provided by the sign (= or -) of the Pearson correlation? What information is provided by numerical value of the Pearson correlation?
Make for more scatter plots comparing GDP growth 1970-2000 to corruption, political rights, rule of law, and socio-political instability
A case-control study is performed to study the relationship between esophageal cancer and an exposure (exposure A).
Given the following data, calculate the EMV for each investment alternative. Which is best based on the EMVs you calculated?
he life expectancy of a brand of hair dryer is normally distributed wiht a mean of four years and a standard deviation of 8 months.
Using t test for significance of slope to determine whether the independent variable is a significant predictor of the dependent variable - Find the sum of the least squares slope and intercept parameter?
Carbon monoxide (CO) emissions for a certain kind of car vary mean 2.4 g/mi and standard deviation 0.7g/mi. A company has 60 of these cars in its fleet. Let y represent the mean CO level for the companies fleet. Estimate the probability that y is ..
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