What’s the correct answer for this?

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Write an algebraic expression for the word expression the quotient of c and 8