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Throughout the semester I have asserted and demonstrated the essential similarity between various statistical indices. Select any of the 3 of the following indices: z, t, F, r, Chi square. Using the data below, show that analyses using each of the three statistics yields the same or similar outcomes.
Control: 3, 9, 6, 2, 4, 4, 3, 1Experiment: 8, 6, 12, 6, 8, 10, 8, 6
Scale with a standard deviation of 10. Calculate and interpret the 90 precent confidence interval for the pipulation mean level of satisfaction.
Calculate the paired sample t statistic for these mood scores and How has the relation between the mean and the median changed? What does this suggest about the distribution of the transformed data?
Your office has just received 128 insurance claims to be processed in the next few days. What is the probability that half or more of the claims have been padded?
A side effect of a certain anesthetic used in surgery is the hiccups, which occurs in about 10 percent of the cases. If three patients are scheduled for surgery today and are to be administered this anesthetic, compute the probability that
Think about a real life situation that follows a linear equation, with the independent variable being years. What would the slope tell you about future years?
Evaluate this statement: "Without good measurement, statistical analysis is worthless." Do you believe it is an overgeneralization.
What would you suggest to be the appropriate statistic tests to use and why ? Any suggestions on stating the hypothesis in a more professional manner?
Create a set of data that can be modeled as a polynomial function. Please provide a reference to the data. Plot the data using Microsoft Excel including the equation for the fit. Discuss how closely the data seem to match to the best fit line.
The mean SAT score in mathematics is 498. The founders of a nationwide SAT preparation course claim that graduates of the course score higher, on average, than the national mean.
Consider a Poisson distribution with a mean of two occurrences per time period.
A company has 25 cars of this model. What is the probability that the mean nitrogen oxide emissions of these cars is above the 0.3g/mi limit?
Consider random variables X and Y with a joint pmf, given in the following table. Compute the conditional expectations E[X|Y = 1] and E[X|Y > 1].
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