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A random sample of size 8 from N 72 yielded

A random sample of size 8 from N(μ, 72) yielded = 85. Find the following confidence intervals for μ:

(a) 99%.

(b) 95%.

(c) 90%.

(d) 80%.

(a) 99%.

(b) 95%.

(c) 90%.

(d) 80%.

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