The concentration of carbon monoxide in parts per million is believed to be normally distributed with a
Question:
The concentration of carbon monoxide in parts per million is believed to be normally distributed with a standard deviation σ = 8.
A single measurement of the concentration is made, and its value is 85.
a. Use the methods of Section 8.1 to construct a 95%
confidence interval for the mean concentration.
b. Would it be possible to construct a confidence interval using the methods of this section if the population standard deviation were unknown? Explain.
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