Suppose you did a survey of male shoes size and the mean of that survey was size 10.5 with a standard deviation of 1.5. what is the z-score of a size of 8.5?

-1.33

Step-by-step explanation:

Given : Population mean of male shoes size :

Standard deviation :

Let x be a random variable that represents the sizes of the shoes.

The formula for z-score is given by :-

For x= 8.5 , we have

Hence, the  z-score of a size of 8.5 =-1.33

answer: the 4 kilogram bag

step-by-step explanation: this is because if you divide the number of kilograms into the total it will tell you how much each individual kilogram would be worth. 2 kilos is 7 and change 3 would be around 6 ish and the 4 kilo would be 4.6 and change and the 5 kilos would be like 4.88