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High IQ scores. The Wechsler Adult Intelligence Scale (WAIS) is the most common IQ test. The scale of scores is set separately for each age group and is approximately Normal with mean 100 and standard deviation 15. The organization MENSA, which calls itself "the high IQ society," requires a WAIS score of 130 or higher for membership. What percent of adults would qualify for membership?
In recent years, fishermen have suffered financial hardship because of shortened fishing seasons, reduced catches and lower market prices. Moreover, fishermen have complained about price fluctuations and have called for a system of minimum prices.
You are asked to estimate the chance that the sum will be positive. Can you do it if you are also told the average and SD of the numbers in the box, but are not told the numbers themselves?
The probability mass function PH,B(h, b) for the two random variables H and B is given in the following table. Find the marginal PMFs PH (h) and PB(b).
The Southern Railroad Company has been subcontracting for the painting of its railroad cars as needed. However, management has decided that the company can save money by doing this work itself.
Use technology to model this contest. Try your simulation 10 times and record the number of free nights awarded each time. Did anyone win five or more free nights' stay?
the piron software company currently develops marketing software for primarily service-based organizations. from a
if the population mean is assumed to be 20 and the sample standard deviation is 5 a score of 15 would have a z-value of
question assume the branch manager requested estimates of the mean selling price of gulf view condominiums with a
Calculate and plot t he new supply schedule and indicate the new equilibrium price and quantity on your diagram
find the value of z that would be used to test the difference between the proportions given the following. use g - h.
based on the information compute the confidence interval using the t-distribution1. a tire manufacturer wishes to
Determine the percent of the days is the price between $38.00 and $40.00?
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