You may need to use the appropriate appendix table or technology to answer this question. change plus the dividend payment for the quarter. (a) What is the value of the sample mean (as a percent)? What is its interpretation? The value is %, which is the estimate of the I mean percent total return per quarter for this stock. variance standard deviation % (c) Construct a 95\% confidence interval for the population variance. (Round your answers to two decimal places.) to (d) Construct a 95\% confidence interval for the population standard deviation (as a percent). (Round your answers to two decimal places.) % to %