(Solved): currently stuck on these types of problems. hope to get help. ty! A study was conducted to detemine ...

A study was conducted to detemine whether a the final grade of a student in an introductory psychology course is linearly related to his or her performance on the verbal ability test administered before college entrance. The verbal scores and final grades for 10 students are shown in the table below. Find the least squares line. $\hat{y}=+x$ Should the regression be used to predict the final grade of a student with a verbal score of 100 ? answer: Find the following: The regression equation is $\hat{y}=+x$. If the amount of the bill is $\$60$, the best prediction for the amount of the tip is A study of king penguins looked for a relationship between how deep the penguins dive to seek food and how long they stay underwater. For all but the shallowest dives, there is a linear relationship that is different for different penguins. The study report gives a scatterplot for one penguin titled "The relation of dive duration $(DD)$ to depth $(D$ )." Duration $DD$ is measured in minutes and depth $D$ is in meters. The report then says, " The regression equation for this bird is: $DD=2.23+0.0096D$. (a) What is the slope of the regression line?. Answer: minutes per meter. (b) According to the regression line, how long does a typical dive to a depth of 175 meters last? Answer: minutes.