A random sample of ?n measurements was selected from a population with standard deviation ?=11.7 and...

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Statistics

A random sample of ?n measurements was selected from apopulation with standard deviation ?=11.7 and unknown mean ?.Calculate a 95% confidence interval for ? for each of the followingsituations:

(a) ?=60, ?=85
≤?≤

(b)  ?=75, ?=85
≤?≤

(c)  ?=100, ?=85
≤?≤

Answer & Explanation Solved by verified expert
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Solution Given thataSample size n 60Z2 196Margin of error E Z2n 196 117 60Margin of error E 30At    See Answer
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