(i) if we regress outlf on all of the independent variables in equation (7.29), what will happen to the intercept and slope estimates? (hint: inlf 5 1 2 outlf . plug this into the population equation inlf 5 b0 1 b1nwifeinc 1 b2educ 1 … and rearrange.) (ii) what will happen to the standard errors on the intercept and slope estimates? (iii) what will happen to the r-squared?

Ateacher asked his students to vote for an animal to be their class pet. five-eighteenths of the students voted for a rabbit, voted for a snake, and voted for a hamster. which statement is true? more students voted for a hamster than a snake. more students voted for a snake than a rabbit. more students voted for a rabbit than a hamster. more students voted for a snake than a hamster.

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.