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1. A random sample of 28 students at a particular university had a mean age of...

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Statistics

1. A random sample of 28 students at a particular university hada mean age of 22.4 years. If the standard deviation of ages for alluniversity students is known to be 3.1 years,Find a 90% confidenceinterval for the mean of all students at that university. SHOWWORK

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Given that 224s 31n 28Degrees of freedom df n 1 28 1    See Answer
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