Afinancial planner wants to invest $8000, some in stocks earning 15% annually and the rest in bonds earning 6% annually. how much should be invested at each rate to get a return of $930 annually from the two investments? (hint: let x = the amount, in dollars, invested at 15%, and let y = the amount, in dollars, invested at 6%.)

You use math in day-to-day routines when grocery shopping, going to the bank or mall, and while cooking. how do you imagine you will use math in your healthcare career?

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

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.