Q1) Following data represent concentration of dissolved organic carbon (mg/L) collected from 20 samples of organic soil.
|
14.00
|
29.80
|
27.10
|
16.51
|
15.42
|
|
8.81
|
20.46
|
20.46
|
14.90
|
33.67
|
|
30.91
|
14.86
|
15.42
|
15.35
|
9.72
|
|
19.80
|
14.86
|
8.09
|
15.42
|
18.30
|
a) Sample mean is?
(Simplify your answer.)
b) Sample standard deviation is?
c) 99% confidence interval for population mean µ is?
