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# Specifications for an aircraft bolt require that the ultimate tensile strength be at least 16.SkN. It is known that 8% of the bolts have strengths less than 18.SkN ...

## Question

###### Specifications for an aircraft bolt require that the ultimate tensile strength be at least 16.SkN. It is known that 8% of the bolts have strengths less than 18.SkN and that 5% of the bolts have strengths greater than 20.6kN. It is also known that the strengths of these bolts are normally distributedFind the mean and standard deviation of the tensile strengths of the boltsWhat proportion of the bolts meet the strength specificationFind the 8Oth percentile of the sample mean breaking strength:

Specifications for an aircraft bolt require that the ultimate tensile strength be at least 16.SkN. It is known that 8% of the bolts have strengths less than 18.SkN and that 5% of the bolts have strengths greater than 20.6kN. It is also known that the strengths of these bolts are normally distributed Find the mean and standard deviation of the tensile strengths of the bolts What proportion of the bolts meet the strength specification Find the 8Oth percentile of the sample mean breaking strength:  #### Similar Solved Questions

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