A random sample of n measurements was selected from a population with unknown mean ? and known standard deviation ?. Calculate a 95% confidence interval for ? if: n = 49, x? = 25, ?² = 16 (23.88, 26.12) (24.35, 25.65) (24.00, 26.00) (14.94, 15.06)
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- Sample size \( n = 49 \) - Sample mean \( \bar{x} = 25 \) - Population variance \( \sigma^2 = 16 \) - Therefore, population standard deviation \( \sigma = \sqrt{16} = 4 \) The formula for the 95% confidence interval for the population mean \( \mu \) when the Show more…
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