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Consider a bivariate data set and imagine that the data are projected onto the x-axis and then checks for outliers are made using the MADmedian rule. The same is done when projecting the data onto the y-axis and both times no outliers are found. Why might the conclusion of no outliers be unsatisfactory?
using the minitab t calculator find the value from the t distribution to two decimal places for the calculation of a
The daily expenditure on food by a traveler, in dollars in summer 2006, was as follows: 17.5, 17.6, 18.3, 17.9, 17.4, 16.9, 17.1, 17.1, 18.0, 17.2, 18.3, 17.8, 17.1, 18.3, 17.5, 17.4.- Find the mean, standard deviation, and variance.
According to the U.S. Census Bureau, the mean household income in the United States in 2000 was $63,091 and the median household income was $50,054.
Assume that the two tests use different scales to measure the same aptitude. If someone gets a SAT score that is the 67th percentile, find the actual score and the equivalent ACT score.
How likely is it that the store owner will make at least $7,000 if she implements your suggestion?
Prediction equation is y^ = 30 + 0:60x. Determine predicted final exam score for student who has (i) midterm score = 100, (ii) midterm score = 50. Note that predicted nal exam score regresses toward mean.
In order to satisfy governmental regulations, the institution wishes to determine if gender has an impact on approval time. What is the model now? What hypothesis would you test to establish no impact of gender?
Define validity and reliability. How can we insure our data is both reliable and valid? Which of these two do you think is the more important? Provide examples to support your reasoning.
If active redundancy is the only means of achieving further reliability growth for each of the subsystems, what is the minimum number of redundant units of each necessary to achieve the component reliability goals?
consider two random variables with standard deviations equal to 1.5 and 2.1. the standard deviation of the average of
a random sample of 16 emergency reports was selected from the files of an ambulance service. the mean time computed
In what situations might you use probability as a manager to approach business-related problems? What are the advantages to using probability concepts in business decisions?
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