Question

A company produces packets of soap

Answer 1

Answer:

(b) 31.85

Explanation:

First, we need to know the z-score for a one-sided confidence interval with 95% coverage. Looking at a z-score table, this value is 1.645. Then:

$x = (z \cdot \sigma) + \mu = (-1.645 \cdot 0.7) + 33 = 31.85$