You volunteer to drive people home from an event. there are 18 people who need rides, but you can only fit 7 of them in your vehicle. how many different groups of 7 people can you drive?

When the ball has traveled a distance of

Combine the information in the problem and the chart using the average balance method to solve the problem.

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.