The breaking strength π 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 πΜ
, the
sample mean breaking strength.
(1) What is the probability that the sample mean falls between
4800 psi and 5200 psi?
(2) What sample size π would be necessary in order to have
π(4900 < πΜ
< 5100) = 0.99?
The breaking strength 𝑋 of a certain rivet used in a machine engine has a mean 5000 psi and standard deviation 4
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answerhappygod
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The breaking strength 𝑋 of a certain rivet used in a machine engine has a mean 5000 psi and standard deviation 4
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