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Suppose that X is a discrete random variable with probability mass function: PX(x)= (1/2)^((2x/ pi)+1) , where x =0, pi/2, pi, 3pi/2, 2pi... , and equals to 0 otherwise. 1. using properties of the expectation operator, calculateE[Y], Var[Y] for the fandom variable Y= sin(X) 2. Find the pmt of Y
Let x = number of the ball obtained on any selection. Then the probability distribution for x is given by:
Use population distribution to determine expected juror frequencies. Test researcher's claim at a = 0.01.
Use the p-value approach and test to determine if the average yearly income of marketing managers in the East is significantly different from the West.
Percentage points in either direction from what would have been obtained by interviewing all voters in the United States." Find the sample size suggested by this statement.
The amounts of money requested on home loan applications at a particular bank follow the normal distribution, with a mean of $80,000 and a standard deviation of $24,000. A loan application is received during the day.
A shipment of crankshafts is believed to be defective. A simple random sample of 16 is drawn from a large shipment. Check to see if the sample is any different from the assumed population mean of 224.
They answered in 230 seconds per call with a standard deviation of $40. Can the company claim that they are faster than the average utility?
fitting of simple linear regression equation.circulation is the lifeblood of the publishing business. the larger the
Calculate the arithmetic mean age of the uninsured senior citizens to the nearest hundredth of a year. Identify the median age of the uninsured senior citizens
Twenty air samples were obtained and the carbon monoxide concentrations were recorded. the results in ppm (parts per million) were:
test the hypothesis that the mean μ = 100 against the alternative μ ≠ 100. Find the type II probability when the true mean heat evolved is 103.
Scrap rates per thousand (parts whose defects cannot be reworked) are compared for 5 randomly selected days at three plants. Does the data prove a significant difference in mean scrap rates?
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