Suppose iq scores were obtained from randomly selected couples. for 20 such pairs of people, the linear correlation coefficient is 0.899 and the equation of the regression line is modifyingabove y with caret equals 0.98 plus 0.97 x, where x represents the iq score of the husband. also, the 20 x values have a mean of 98.03 and the 20 y values have a mean of 96.05. what is the best predicted iq of the wife, given that the husband has an iq of 104? use a significance level of 0.05.

1.44 centimeters is the correct answer

set the two equations for y equal to each other. solve for x. this will be the x-coordinate for the point of intersection. use this x-coordinate and plug it into either of the original equations for the lines and solve for y.

answer-

a. the total cost of a taxi ride includes an initial charge of approximately $3.30

solution-

in the graph,

x axis represents the distance traveled and

y axis represents the total fare

the best fit line intersects the y axis approximately at 3.30 or y-intercept is 3.30. at x=0, i.e when the taxi is still, the value of y or the cost of the fare is 3.30. that means $3.30 is the fixed charge which will be levied along with the other fare.

the slope of the line represent the cost per mile. as the best fit line is straight line, so the price per mile is constant.