A random sample of 144 with a mean of 100 and a standard deviation of 70 is known from a population | MathCelebrity Forum

A random sample of 144 with a mean of 100 and a standard deviation of 70 is known from a population

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A random sample of 144 with a mean of 100 and a standard deviation of 70 is known from a population of 1,000. What is the 95% confidence interval for the unknown population?

Large Sample Confidence Interval Mean Test
88.5667 < u < 111.4333
 
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