Find the solution set for the given inequality if the replacement set is {1, 2, 3, 4, 5, 6}.

3x – 5 ≥ 7

a.
{1, 2, 3}

b.
{4, 5, 6}

c.
{1, 2, 3, 4}

d.
{5, 6}

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?