Tyra has recently inherited $5300, which she wants to deposit into an IRA account. She has determined that her two best bets are an account that compounds quarterly at an annual rate of 4.7% (Account 1) and an account that compounds daily at an annual rate of 4.8% (Account 2). Required:
How much would Tyra's balance be from Account 2 over 5.8 years?

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.