Essay
The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 cm and a standard deviation of 0.2 cm.
-Suppose the standard deviation increases to 0.3 cm.What is the probability that average length of a steel sheet from a sample of 9 units is more than 29.95 cm long?
Correct Answer:
Verified
Correct Answer:
Verified
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