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Your organization has a goal of 14 days for the average processing of a purchase request (PR) from notification to final approval. They are only concerned if it takes longer than 14 days. A sample of 25 PRs produced a mean of 15.5 days and a standard deviation of 1.5 days. Test at the 10% level of significance whether they are meeting their goal. Select the correct answer out of each pair of choices. (Carry intermediate calculations to three decimal places.)
350 million test are expected to be sold this year. this represents 114% increase from last year. how many test were sold last year?
A person hired a firm to build a CB radio tower.The firm charges $100 for labor for the first 10 feet. After that, the cost of the labor for each succeeding 10 feet is $25 more than the preceding 10 feet. That is, the next 10 feet will cost $125, ..
You own a portfolio that is 38 percent invested in Stock X, 22 percent in Stock Y, and 40 percent in Stock Z. The expected returns on these three stocks are 10 percent, 15 percent, and 12 percent, respectively.
Find the (x, y)-coordinates of the center of mass of the plate. This "balance point" of the plate coincides with the center of mass of a system consisting of three 1-gram point masses located at the vertices of the plate.
what is the selling price of a watch that costs a jewelry store $70$ the store uses a markup of 38%.
Lauren bought 20 ounces of sliced ham. she used 3/4 of the ham to make sandwiches for her friends and 1/5 of the ham in an omelet. how many ounces of ham were left?
Amy paid $102.00 for a pair of New Balance 1122 running shoes during a 15% off sale. What was the regular price?
Modify the Euclidean algorithm to find the greatest common divisor of 2x^3 + x^2 - 2x - 1 and x^2 + 3x + 2. This requires long division with polynomials.
A manufacturing company has 10 machines in continous operation during a workday. The probability that an individual machine will break down during the day is .10
a researcher is interested in knowing if there are differences between the incidence of accidents among male and female
A tank of capacity 60KL is to be filled by a hose whose flow is 150 L/minute. If the tap is turned on at 8 am, show the tank will be full between 2.30 pm and 3 pm on the same day. (hint: 1KL = 1000L)
what are the dimensions of the silo (radius and height of cylindrical tower) that minimize the cost of the material? Assume the silo has no floor and no flat ceiling under the dome.
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