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

Given that 1 Point estimate sample mean bar x 99400 sample standard deviation s 12000 sample size n ...

1. A random sample of 87 airline pilots had an average yearly income of $99,400 with...

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1. A random sample of 87 airline pilots had an average yearly income of $99,400 with...

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