The previous balance on your business credit card was $420.87. Then you purchased a new chair for your office that cost $120.63. For the next billing cycle, you paid $380. What is the remaining balance on your business card?

Historically, 12 percent of a mail-order firm's repeat charge-account customers have an incorrect current address in the firm's computer database. the number of customers out of 19 who have an incorrect address in the database is a binomial random variable with n = 19 and 2formula36.mml = 0.12.

The bonds issued by the south foot bear a coupon rate of 7.5 percent, payable semiannually. the bonds mature in 6.5 years, sell at par, and have a $1,000 face value. what is the yield to maturity

At cooly cola, we are testing the appeal of our new diet one cola. in a taste test of 250 randomly chosen cola drinkers, 200 consumers preferred diet one cola to the leading brand. assuming that the sample were large enough, the large-sample 95% confidence interval for the population proportion of cola drinkers that prefer diet one cola would be: