SOLUTION: A company claims to produce ball bearings with the mean weight of 6 grams and standard deviation of 1 gram. If we take a random sample of size 1000, what is the probability of the
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Question 1042952: A company claims to produce ball bearings with the mean weight of 6 grams and standard deviation of 1 gram. If we take a random sample of size 1000, what is the probability of the mean weight of the sample to be ≤5.9?
a) 0.1
b) 0.59
c) 0.0008
d) None of these
You can put this solution on YOUR website! A company claims to produce ball bearings with the mean weight of 6 grams and standard deviation of 1 gram. If we take a random sample of size 1000, what is the probability of the mean weight of the sample to be ≤5.9?
a) 0.1
b) 0.59
c) 0.0008
d) None of these
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z(5.9) = (5.9-6)/1 = -0.1
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P(x <= 5.9) = P(z <= -0.1) = normalcdf(-100,-0.1) = 0.4602
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Ans: None of these
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Cheers,
Stan H.
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