How to Find the Confidence Interval for the Mean with Large Samples and Sigma Unknown. [HD]

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United States Mr. Math Expert
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Refer to a sample of 36 mechanical engineers averaging 41.7 years of age, with a sample standard deviation of 6.9 years. Construct a 95% confidence interval to estimate the average age of a mechanical engineer.



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Tags:
Math
mathematics
word problem
probability
normal distribution
z score
Sampling Distribution
confidence interval