Question H. he following data represent the concentration of organic carbon (mg/

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Question H. he following data represent the concentration of organic carbon (mg/L) olected from organic soil Construct a 99% confidence interval for the mean oncentration of dissolved organic carbon collected from organic soil. (Note 15.42 29.80 2710 16.51 8.81 17.50 2046 14.90 30.91 14.86 15.72 15.35 19.80 14.86 8.09 17.50 18.03 mgL and s 722 mgL) tribution Click the icon to view the table of areas under the lds Construct a 99% confidence interval for the mean concentration of dissolved organic carbon collected from organic soil. OD (Use ascending order. Round to two decimal places as needed ) Enter your answer in each of the answer boxes enovo Esc 2 5 6

Explanation / Answer

Confidence interval = (X¯) +- (t*s)/sq.rt(n))

X¯ = 18.03, s = 7.22, n = 16 (number of samples)

Df = n-1 =15                    

For df = 15 and 99% confidence(alpha = 0.01) two tailed, t = 2.602

Thus,

Confidence interval = 18.03 +- (2.602*7.22)/sqrt(16)

= 18.03+-4.70

= (13.33 to 22.73)

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