A correlation between college entrance exam grades and scholastic achievement was found to be -1.08. On the basis of this you would tell the university that .

The correlation computed is incorrect.

Step-by-step explanation:

Correlation is a statistical concept used to define the strength of linear relationship between two variables.

The correlation coefficient is computed using the formula:

The range of r is -1.00 to +1.00.

A value of r = -1.00 indicates a strong negative correlation and r = +1.00 indicates a strong positive correlation.

In this case the correlation between college entrance exam grades and scholastic achievement was found to be -1.08.

This cannot happen because the value of r lies in the range -1.00 to +1.00.

The correlation computed is incorrect.

9514 1404 393

  A: A has $496.88 more

Step-by-step explanation:

A graphing calculator works this problem nicely.

The balance in the simple interest account after t years is ...

  A = 1000(1 + 0.08t)

The balance in the compound interest account after t years is ...

  B = 800(1 +0.05)^t

The larger starting balance and the higher interest rate keep the A account balance higher than the B account balance for more than 29 years. Then, the effect of interest compounding takes over. Until then, account A has more money in it. The calculator shows Account A has $496.88 more after 10 years.