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In a population of 1000 subjects, 720 possess a certain characteristic. A sample of 40 subjects selected from this population has 28 subjects who possess the same characteristic. What are the values of the population and sample proportions?
Population proportion=
Sample proportion =
assume that the number of customers who arrive at a water ice stand follows the poisson distribution with an average
What is the approximate probability that the mean diameter x of the sample of 25 bearings will lie within 0.0001 inch of the population mean diameter of the bearings?
an experiment consists of choosing a subset from a fixed number of objects where the arrangementorder of the chosen
When an election for political office takes place, the television networks cancel regular programming and instead, provide election coverage.
a candidate for one of ohios two u.s. senate seats wishes to compare her support among registered voters in the
Consider a borrower that is approved for a standard 10-year, fully amortizing house mortgage with an original balance of $500,000 and a note rate
a regional director responsible for business development in the state of pennsylvania is concerned about the number of
Calculate the sample statistics and determine whether there is evidence that the mean blackness is less than 0.97. Write a memo to management that summarizes your conclusions.
The number of children, x, belonging to each of eight families registering for swimming was 2, 2, 2, 4, 2, 1, 2, 2. Find the mean, x. (Give answer correct to 2 decimal places.)
When the data have the properties of ordinal data and the interval between observations is expressed in terms of a fixed unit of measure, the variable has which scale of measurement
Insurance. An insurance policy costs $100 and will pay policyholders $10,000 if they suffer a major injury (resulting in hospitalization) or $3000.
This problem works out the missing steps in the proof of Theorem 10.8. For W and X as defined in the proof of the theorem, show that W = AX. What is the matrix A? Use Theorem 5.16 to find fW(w).
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