Please show working if you can Alice is planning her next vacation. She bugeted $110 for travelexpenses, and she expects to spend $120 each day for food andlodging. Her total budget for the trip is $710. How many days, d, can Alice have for her vacation without exceeding her budget?

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.