Short Answer
A random sample of 87 airline pilots had an average yearly income of $99,400 with a standard deviation of $12,000.
a.If we want to determine a 95% confidence interval for the average yearly income, what is the value of t?
b.Develop a 95% confidence interval for the average yearly income of all pilots.
Correct Answer:
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a.1.988
b....View Answer
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Correct Answer:
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b....
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