Question: please solve all the questions, with explanation. 1) If a is the sample mean of a random sample of size n from a normal population

please solve all the questions, with explanation.1) If a is thesample mean of a random sample of size n from a normal

please solve all the questions, with explanation.

1)

population with known variance 2, a 100(1-a)% CI on u is givenby XX - Za/20 / Vnimage text in transcribedimage text in transcribed

If a is the sample mean of a random sample of size n from a normal population with known variance 2, a 100(1-a)% CI on u is given by XX - Za/20 / Vn

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