Battery life has a strong, negative, linear relationship with temperature. If the least-squares regression line using xx = temperature explains 90% of the variation in battery life, which of the following must be the correlation, rr, between battery life and temperature?

-0.95

Step-by-step explanation:

The value that explains the least-squares regression line is 90% or 0.9, and is also r^2.

You would just square root r^2 and get r=0.948. since the relationship is negative, r= -0.948, or -0.95

answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.

493 would be the correct answer

step-by-step explanation: