Betty took out a subsidized student loan of 35000 at a 4.8% apr, compounded monthly, to pay for her last four semesters of college if she will begin paying off the loan in 21 months with monthly payments lasting for 20 years, what will be the amount of her monthly payment

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?