(9.3) The following values are obtained from a random sample that was drawn from a normally distributed population. [3.19, 2.98, 1.88, 3.34, 2.45, 1.65] If we are interested in creating a 90% confidence interval for , the population standard deviation, then: a) Calculates, the sample standard deviation and s^2, the sample variance. Round your responses to at least 6 decimal places. s = Number s^2 = Number b) What are the values for the lower and upper limits of the confidence interval for the STANDARD DEVIATION ? Round each of your values to at least 3 decimal places before entering them. (Number Number )