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The lifespan of an electrical component is assumed to be normally distributed with an average life of 6 years and a standard deviation of 1 year. The electrical component manufacturer wants to offer their customers a product-replacement guarantee, but hopes to replace at most only 1.5% of the components that fail. How long of a guarantee should the manufacturer offer to buyers of this part? Assume that the lives of the electrical components follow a normal probability distribution.
Find the z-score for each student. Assuming both tests measure the same kind of ability, which student had the higher score?
Garbage quantity is approximately normally distributed. Find the probability that the mean from a sample of 30 families will have between 17 and 18 pounds of garbage.
The regional tupperware dealers earned these commissions last month: what was the mean commision earned? round your answers to the nearest cents.
shown below are rental and leasing revenue figures for office machinery and equipment in the united states over a
a spymaster has a network of 7 operatives whom he pays out of a slush fund containing 20000. for accounting reasons his
Tourism is one consideration for Coffee Time's future. A survey of 1,233 visitors to Mumbai last year revealed that 110 visited a small café during their visit.
Find the least squares regression line by deciding which are the appropriate independent and dependent variables and calculating the equation of the line. State equation of line.
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.
The owner of a small computer store personally sells one computer per week on the average. Use the Poisson distribution to find the probability of randomly selecting a week in which she personally sold three computers.
in a study was conducted concerning the relationship between pet ownership and physical activity in older adults. of
an airport official wants to prove that the proportion of delayed flights for airline a denoted as p1 is less than the
Analyze the DT to determine the optimal strategy for the company. What is the expected value of the optimal strategy? Develop a risk profile for the optimal strategy.
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