Distributed with mean and unknown variance

Reference no: EM131026402

Suppose that Y is normally distributed with mean 0 and unknown variance σ². Then Y²/σ²has a χ²distribution with 1 df. Use the pivotal quantity Y²/σ² to find a

a. 95% confidence interval for σ².

b. 95% upper confidence limit for σ²^.

c. 95% lower confidence limit for σ².

Reference no: EM131026402

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