Question

orrect Question 7 0/1 pts The amounts of 6 restaurant bill x (in dollars) and the corresponding amounts of the tips y (in dollars) are given below Bill 32.98 49.72 70.29 97.34 43.58 52.44 Tip 4.50 5.28 10.00 16.00 5.50 7.00 The regression equation is ý = 0.19.2 - 2.73, and the coefficient of determination r2 = 0.97. Based on the given r, which of the following conclusions may be made? Hint: Correlation is r, we are given p2. Thus square root of it is r. Then based on amount of r conclusion can be made. Also sign of ris same as sign of slope in equation. None of the above x and y are strongly correlated, and y tends to increase as x is increased x and y are moderately correlated, and y tends to increase as x is decreased x and y are very poorly correlated. x and y are very strongly correlated, and y tends to increase as x is decreased

Answer 1

7. As slope value is positive so correlation is positive

So as r^2=0.97, hence r=0.98

As r is positive and it is near to 1, so there is strong positive correlation between x and y

x and y are strongly correlated, and y tends to increase as x is increased

So is the answer.