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Question: The associated Press reports that the mean trading Volume for equity and index options contracts was 3.6 million in July 2007. Assume that the distribution is normal with a mean µ = 3.6 (in millions) and standard deviation is σ = 0.5 (in millions).
a) Find the probability that a randomly selected trading value exceeds 4.1 million.
b) Find the trading volume greater than 90% of all trading volumes. Use formula X1 = Z σ + µ
Mighty Manufacturing must decide on the processes to use to produce 1650 units. If machine 1 is used, its production will be between 300 and 1500 units. Machine 2 or machine 3 can be used only if machine 1's production is at least 1000 units. Ma..
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In effect, she wanted to determine if there was a relationship between FCAT Science Standardized score and FCAT Reading Standardized score.
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A population of scores forms a normal distribution with a mean of μ = 40 and a standard deviation of σ =12.
The standard deviation of all possible x values is called the?
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