A sample of customers from Barnsboro National Bank shows an average account balance of $315 with a standard deviation of $87. A sample of customers from Wellington Savings and Loan shows an average account balance of $8350 with a standard deviation of $1800. Which statement about account balances is correct? (A) Barnsboro Bank has more variation. (B) Wellington S&L has more variation. (C) Both have the same variation.

The correct option is A as Barnsboro Bank has more variation.

Step-by-step explanation:

From the data

Coefficient of Variation for 1st sample is given as

Coefficient of Variation of 1st sample

Coefficient of Variation of 2nd sample

So the coefficient of variation of 1st sample is 27.62 while the coefficient of 2nd sample is 21.56. Thus the 1st sample has more variation thus the second bank.

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.