The prices of paperbacks sold at a used bookstore are approximately Normally distributed, with a mean of $7.85 and a standard deviation of $1.25. Use the z-table to answer the question.

If the probability that Joel randomly selects a book in the D dollars or less range is 56%, what is the value of D?

$4.46

$7.75

$8.04

$8.10

(C) 8.04

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?