1.23. Members of a high school sports team are selling two popular items for a fundraiser : candy bars and bags of chips. They earn $0.75 for every candy bar they sell and $0.50 for every bag of chips . The members want to earn at least $100 from all sales. The members of the sport team estimate that they won't be able to sell more than 200 units in total. Which combinations of candy bars and bags of chip sold will the teem meat the goal of earnign at keast 100$ select all that apply

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.