You have $55,000 in a savings account that pays 2% interest per year.
the inflation rate that year is 3.24%.
to calculate simple interest: principal x rate x time = interest
how much do you make in interest in a year?
$
56782
how much would you need to have made for your spending power to keep up with inflation in that year?
$
how much buying power did you lose in that year because of inflation?
$

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.

Which of the following represents the length of a diagonal of this trapezoid?

Ineed here’s a picture of the question