A 95 % confidence interval for a population mean was reported to be 152 to 160 . If σ=15 what sample size was used in this study? | Numerade
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SOLVED: If a confidence level of 94% is used to construct a confidenceinterval for the mean μ of a normal population when the value ofthe standard deviation σ is known, select the value of the zcritical value to be used.
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What is meant by the term 90% confident when constructing a confidence interval for a mean? a. If we took repeated samples, approximately 90% of the samples would produce the same confidence interval. b. If we took repeated samples, approximately 90% of the confidence intervals calculated from those samples would contain the sample mean. c. If we took repeated samples, approximately 90% of the confidence intervals calculated from those samples would contain the true value of the population mean.
What is meant by the term 90% confident when constructing a co…
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Answered: (a) Calculate a 90% confidence interval for the average difference between the temperature measurements between 1968 and 2008. | bartleby
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