Mathematics, 10.03.2020 17:12 Kayccee9958
High-strength concrete is supposed to have a compressive strength greater than 6,000 pounds per square inch (psi). A certain type of concrete has a mean compressive strength of 7,000 psi, but due to variability in the mixing process it has a standard deviation of 420 psi, assuming a normal distribution.
What is the probability that a given pour of concrete from this mixture will fail to meet the high-strength criterion?
Answers: 3
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Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?
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Mathematics, 21.06.2019 20:00, myparentsrock17
Given ab and cb are tangents of p, and m =10°. what is the measure of abp?
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