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Interpret the meaning of "standard deviation" if the standard deviation of a set of numbers is 2 and the arithmetic mean is 3. Apply the empirical rule
59% identify NASCAR as their favorite type of racing. Suppose four auto racing fans are randomly selected. What is the probability that all four have NASCAR as their favorite?
Batch is acceptable. What sample size is recommended for the hypothesis test? Use 30 hours as an estimate of the population standard deviation.
Briefly describe: a statistical relation, time series, cross section, least squares, See, r, R-squared, t-value, multicollinearity and serial correlation.
Give examples of two different numbers that can be used to represent a probability value.
The administrator at Saint Frances Hospital is concerned about the amount of overtime the nursing staff is incurring and wonders whether so much overtime.
Use the most appropriate model to forecast daily stock price for March 1, 2011.
Which of these measures of central tendency would be likely to best serve the purposes of the management representative? Why?
In classifying hypertension, three categories are used: individuals whose systolic blood pressures are less than 140, those with blood pressures between 140 and 160. and those with blood pressures over 160.
the presence of bacteria in a urine sample bacteriuria is sometimes associated with symptoms of kidney disease in
Identify the set of possible values for each random variable. (Make a reasonable estimate based on experience, where necessary.)
A sample of n = 16 scores is selected from a population with µ = 60 and s = 24. If the sample mean is M = 66, what is the z-score for this sample mean?
A shipment of TVs contains units that are 70% top quality. Thirty percent (30%) of the TVs are poor quality.
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