Find the balance in a $900 interest account after 10 years if the interest rate is 4.62%, compounded annually.
$1,413.81
$941.58
$415.80
$4,158.00

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?