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The breaking strength X of a certain rivet used in a machine engine has a mean 5000 psi and standar…

The breaking strength X of a certain rivet used in a machine engine has a mean 5000 psi and standard deviation 400 psi. A random sample of 36 rivets is taken. Consider the distribution of X̅, the sample mean breaking strength. (a) What is the probability that the sample mean falls between 4800 psi and 5200 psi? (b) What sample n would be necessary in order to have P(4900 lt;X̅ lt;5100)=0.99 ?

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Видео The breaking strength X of a certain rivet used in a machine engine has a mean 5000 psi and standar… канала Grace Brown
Understanding Continuous Random Variables: Key Concepts
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25 ноября 2024 г. 19:03:40
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