They have a goal to raise $250... but on top of that they will also need to pay $20 for the booth... that has to be covered by the cookies sales too, ensuring they have a net balance of $250 at the end.
So, with 250 = 3c - 20, they will cover that booth expense.
But how many dozens of cookies do they have to sell to reach their goal?
<span>•<span>If
the raw score is transformed into a z-score, however, the value of the z-score
tells exactly where the score is located relative to all the other scores in
the distribution. </span></span>