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A student is studying the mean age of students in her Statistics class and wants to construct a 95% confidence interval.She randomly selects 9 students

A student is studying the mean age of students in her Statistics class and wants to construct a 95% confidence interval.She randomly selects 9 students and calculates their mean age as 19.1 years with sample standard deviation of 1.5 years.What is the 95% confidence interval for the population mean?

A. [17.95, 20.25]

B.[17.17, 20.03]

C.15.64, 22.56]

D.[14.97, 20.27]

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