1. Consider the following. (Enter your answers to four decimal places.) (a) Find the level of confidence assigned to an

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1. Consider the following. (Enter your answers to fourdecimal places.)
(a) Find the level of confidence assigned to an intervalestimate of the mean formed using theinterval x - 1.03 · 𝜎x to x + 1.03 · 𝜎x.(b) Find the level of confidence assigned to an interval estimateof the mean formed using theinterval x - 1.54 · 𝜎x to x + 1.54 · 𝜎x.(c) Find the level of confidence assigned to an interval estimateof the mean formed using theinterval x - 1.87 · 𝜎x to x + 1.87 · 𝜎x.(d) Find the level of confidence assigned to an interval estimateof the mean formed using theinterval x - 2.16 · 𝜎x to x + 2.16 · 𝜎x.
2. Find the level of confidence assigned to an intervalestimate of the mean formed using the following intervals. (Roundyour answers to four decimal places.)
(a) x − 1.03·𝜎 x to x + 1.03·𝜎 x(b) x − 1.67·𝜎 x to x + 1.67·𝜎 x(c) x − 2.13·𝜎 x to x + 2.13·𝜎 x(d) x − 2.65·𝜎 x to x + 2.65·𝜎 x