Suppose that the population standard deviation is unknown. If 8% of all sample means are smaller than 13 and the population mean is still 15, what is the value of the standard deviation?

water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. at this point, equilibrium is reached. in an isotonic solution, the flow of water in and out of the cell is happening at the same rate.

hope this < 3

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4