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Suppose that X" ,." XII form a random sample from a uniform distribution on the interval (a, b), where both endpoints a and b are unknown. Find the M.L.E. of the mean of the distribution.
What is a sampling distribution and what does it show - what is the difference between a parameter and a statistic and how do they relate to each other?
A random sample was taken of the thickness of insulation in transformer windings, and the following thicknesses (in millimeters) were recorded: Make a frequency table for the data. Use Sturges' rule
One school found that 28.6% of all students are liberal. You wonder whether this percentage is different at your school, but don't know whether it's higher or lower. What hypotheses will you test to see if your school significantly differs from th..
A marksman fires at the center of a target: he hits a random point (X, Y) (measured relative to the center of the target) such that X and Y are independent.
Now make a scatter plot of data from 1982 to 1998 (again, use years since 1800). Determine a linear, power, or exponential model that explains the crude oil production during this time period.
you roll two fair dice a green one and a red one.a what is the probability of getting a sum of 6? enter your answer as
a chemical engineer wants to fit a straight line to the data found observing the tensile strength y of 10 test pieces
Develop a ninety percent confidence interval to measure the percentage of the population audience under the age of twenty-five.
A manager wishes to find out whether there is a relationship between the number of radio ads aired per week and the amount of sales of a product. the data for the sample are shown below?
all statistics are numerical statements but all numerical statements are not statistics
The case information stated that 66% of teenagers purchase products that reflect their style and image as being hip and trendy. How would you test the appropriateness and validity of that percentage? In a test where 900 teens are randomly selected ac..
When only the value-added time is considered, the time it takes to build a laser printer is thought to be uniformly distributed between 8 and 15 hours.
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