a$)$ Is there a relation between Age and LungCap? How about Height and LungCap? Check correlations and draw a heat map $($use "ggplot", do not use "heatmap" function$).$

You should obtain the following output:

b$)$ Test whether average height differs for smoking and nonsmoking people. Select an appropriate INFERENTIAL STATISTICAL TEST, check its assumptions, apply it and make comments on the result $($NO COMMENTS $=0$ MARK$).$

PLEASE ENTER YOUR R Script IN THE TEXTBOX BELOW. You can write your comments and explanations for questions # within the sign $\text{'}$#$\text{'}.$