Refer to Exercise 7 Requirements and assume that sample of 12 voltage levels appears to be from
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Refer to Exercise 7 “Requirements” and assume that sample of 12 voltage levels appears to be from a population with a distribution that is substantially far from being normal. Should a 95% confidence interval estimate of s be constructed using the x2 distribution? If not, what other method could be used to find a 95% confidence interval estimate of s?
Exercise 7
A quality control analyst has collected a random sample of 12 smartphone batteries and she plans to test their voltage level and construct a 95% confidence interval estimate of the mean voltage level for the population of batteries. What requirements must be satisfied in order to construct the confidence interval using the method with the t distribution?
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