Which source of variation measured by a test statistic is a measure of the mean difference caused by a manipulation?

Use the multiplier method to incrases £258 by 43%

Ou have a 20-ounce bottle of juice. you pour out 14 of the bottle to share with a friend. if you pour out 3 ounces for yourself, what fraction of the 20 ounces will be left in the bottle? clear check 35 25 12 1320

Write a corresponding real world problem to represent 2x - 125=400