The standard deviation of the following data set is 0.31. 68% of the data would fall in which range? 4.3, 5.1, 3.9, 4.5, 4.4, 4.9, 5.0, 4.7, 4.1, 4.6, 4.4, 4.3, 4.8, 4.4, 4.2, 4.5, 4.4
A . Pr (3.88 ≤ X ≤ 5.12)
B . Pr (3.57 ≤ X ≤ 5.43)
C. Pr (4.19 ≤ X ≤ 4.81)
D .Pr (2.67 ≤ X ≤ 5.33)

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

a c

step-by-step explanation:

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock