Bank. Which account balance represents a debt that is greater than $20 and less than $30? Account Balance (3)
$25
-$34
-S24
$17
$25
-$24
$17
-$34

 μ = population mean
σ = 0.05, the population standard deviation

Sample size, n = 6
Sample mean,  = (1.05+1.04+1.01+1.06+0.94+0.99)/6 = 1.015

Because the sample size is less than 30, the confidence interval is

where
t* = 2.015, fromm the t-distribution with dof = 6-1 = 5.

The confidence interval for μ is
1.015 +/- 2.015(0.05/√6) = 1.015 +/- 0.0411 = (0.974, 1.056)

(0.974, 1.056) liters