First, distribute the 2 across the parenthesis. 10-3v+9v=28 Combine like terms on the left. 10+6v=28 Start to get the numbers on the right and the v alone on the left by moving the 10 to the right. 6v=28-10 6v=18 Divide to get the v alone. v=3
The answer is: Reject H0. There is convincing evidence that the true mean weight of the chlorine tablets in the 50-pound buckets is less than 50 pounds.
