Asample containing years to maturity and yield for 40 corporate bonds are contained in the data file named corporatebonds (barron’s, april 2, 2012). a. what is the sample mean years to maturity for corporate bonds and what is the sample standard deviation? b. develop a 95% confidence interval for the population mean years to maturity. c. what is the sample mean yield on corporate bonds and what is the sample standard deviation? d. develop a 95% confidence interval for the population mean yield on corporate bonds.

For 2018, rahal's auto parts estimates bad debt expense at 1% of credit sales. the company reported accounts receivable and an allowance for uncollectible accounts of $86,500 and $2,100, respectively, at december 31, 2017. during 2018, rahal's credit sales and collections were $404,000 and $408,000, respectively, and $2,340 in accounts receivable were written off.rahal's accounts receivable at december 31, 2018, are:

As a result of a labeling mistake at the chemical factory, a farmer accidentally sprays weedkiller rather than fertilizer on half her land. as a result, she loses half of her productive farmland. if the property of diminishing returns applies to all factors of production, she should expect to seea. a decrease in the marginal productivity of her remaining land and an increase in the marginal productivity of her labor. b. an increase in the marginal productivity of her remaining land and an increase in the marginal productivity of her labor. c. an increase in the marginal productivity of her remaining land and a decrease in the marginal productivity of her labor. d. a decrease in the marginal productivity of her remaining land and a decrease in the marginal productivity of her labor.

Which of the following emails should he save in this folder instead of deleting or moving it to another folder