Which of the following are statistical questions? How many sandwiches were sold in the cafeteria each day this week? How many cars were manufactured on each day this month? How many chocolates does Ted eat in a day? How many bottles of water did you drink today? A. I, III, and IV B. I, II, and IV C. I, II, and III D. III and IV

He concluded that a heavier object dropped from the same height as a lighter object will land

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap