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The characteristic Function of the cauchy distribution is = e^-t, determine the characteristic function of X=1/n(?xi) i=1....n based on a sample of n from cauchy distribution
A company requires its secretarial employees to demonstrate his/her ability to type more than 45 words per minute in a typing test.
toyota motor corporation developed the scion car model to appeal to young consumers. toyota claims the average age of a
Calculate an 85% confidence interval for the population mean number of wolf pups per den at southwestern United States (US).
The sample mean life is 805 hours with 64 hours of the sample standard deviation. Is there enough evidence to conclude that the manufacturer's claim is true at the 5% significance level?
The sample proportion and the sample standard deviation are all unbiased estimators of the corresponding population parameters - variance of the standard normal distribution
Calculate the Measures of Center and Measures of Variation for the following data set representing the chest size of 20 bears in inches.
The regular fuel consumption is based on the plane carrying the minimum amount of fuel. If more than this is carried, the amount of fuel consumed is higher. Specifically, for each 1,000 gallons of fuel above the minimum, 5% (or 50 gallons per 1,000 g..
using the census data the oh registry of motor vehicles reveal the subsequent about the autos owned by the 10 families
A sample of 3000 observations has a mean of 82 and a standard deviation of 16. Using the empirical rule, find what percentage of the observations fall in the intervals , and x+/- 1s, x+/- 2s x+/- 3s.
a. What z-score separates the highest 25% from the rest of the scores?
If profit earned in the manufacture and sale of X units of a product is P dollars where: P = 10X - 0.001X2
Compute the 95% confidence interval for the proportion of adults who are planning to buy a new car in the next 6 months.
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