How many units made and sold to make the profit
A company has found that when x units of the product are made and sold, its revenue is provided by x 2 + 100 x dollars and its costs are provided by 240 x + 500 dollars. How many units should be made and sold to make the profit of 10,000 dollars?
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A nursing school desires to determine the true mean annual income of its alumni. It randomly samples 120 of its alumni. The mean annual income was $58,700 with standard deviation of $1,500. Determine a 95% confidence interval for true mean annual
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Full time Ph.D. students receive an average $12,837 per year. If the average salaries are normally distributed with the standard deviation of $15,000 find such probabilities.
The average time a person spends at Barefoot Landing Sea aquarium is 96 minutes. The standard deviation is 17 minutes. Assume the variable is normally distributed. If a visitor is selected at random determine the probability that he or she will sp
A company has found that when x units of the product are made and sold, its revenue is provided by x 2 + 100 x dollars and its costs are provided by 240 x + 500 dollars.
Claim: µ = 978. Sample data: n = 23, = 934, s = 30. The sample data appear to come from the normally distributed population with s = 30.
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The carburetors on Fords have the 0.09 probability of failure, those on Renaults have a 0.05 chance and those on Hondas have a 0.02 chance of failure. If a car with a failed carburetor is chosen at random, determine the probability that it is a Fo
A fire is spotted from towers and bearings from Aand B are E 14 degrees N and W 34 degrees N, respectively. Determine distance (d) of fire from line segment (AB).
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