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Exercise 8-1 from Montgomery – Runger. Third Edition. Page 256.
Exercise 8-1 from Montgomery – Runger. Fifth Edition. Page 260.
Para una población normal con varianza conocida σ2, responda las siguientes preguntas:
a) ¿Cuál es el nivel de confianza para el intervalo \( \displaystyle \overline{x}-2.14\frac{\sigma}{\sqrt{n}}\leq\mu\leq \overline{x}+2.14\frac{\sigma}{\sqrt{n}}\)?
b) ¿Cuál es el nivel de confianza para el intervalo \( \displaystyle \overline{x}-2.49\frac{\sigma}{\sqrt{n}}\leq\mu\leq \overline{x}+2.49\frac{\sigma}{\sqrt{n}}\)?
c) ¿Cuál es el nivel de confianza para el intervalo \( \displaystyle \overline{x}-1.85\frac{\sigma}{\sqrt{n}}\leq\mu\leq \overline{x}+1.85\frac{\sigma}{\sqrt{n}}\)?
For a normal population with known variance σ2, answer the following questions:
a) What is the confidence level for the interval \( \displaystyle \overline{x}-2.14\frac{\sigma}{\sqrt{n}}\leq\mu\leq \overline{x}+2.14\frac{\sigma}{\sqrt{n}}\)?
b) What is the confidence level for the interval \( \displaystyle \overline{x}-2.49\frac{\sigma}{\sqrt{n}}\leq\mu\leq \overline{x}+2.49\frac{\sigma}{\sqrt{n}}\)?
c) What is the confidence level for the interval \( \displaystyle \overline{x}-1.85\frac{\sigma}{\sqrt{n}}\leq\mu\leq \overline{x}+1.85\frac{\sigma}{\sqrt{n}}\)?
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