The mean age of a sample of 60 students from a class was, Ask an Expert

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The mean age of a sample of 60 students from a class was found out to be 25.3 years. The variance in population age was 16 years.

a) Calculate a point estimate for the population mean

b) Find the 95% Confidence interval for the population mean.

c) Find the 99% Confidence interval for the population mean.

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