One оf the key chаrаcteristics оf а quality baker is the ability tо maintain consistency in cookie size. If the variance of cookie size is too high, some customers will be very happy (those with larger cookies), while others will be disappointed (those with smaller cookies). Julie knows that the maximum acceptable standard deviation for cookie diameter is 0.32 inches. Julie measures 12 cookies and finds that her sample standard deviation is 0.20 inches. Calculate a 95% two-sided confidence interval on the standard deviation, σ. What is the upper bound?