Answer
$H_{o}: μ = 0$
$H_{a}: μ > 0$
Here we have n = 10, x̅ = 1.020, s = 1.196, df = 9
$s_{x̅} = \frac{1.196}{\sqrt 10} = 0.378$
$t = \frac{1.020 - 0}{0.378} = 2.698$
Using Table C of the book, we have:
0.02 < P < 0.04
Since P < 0.05, we will reject the Null Hypothesis.
Hence we have sufficient evidence that the cola lost sweetness.
Work Step by Step
Calculate mean and stdev using minitab
