A researcher randomly selects and measures the volumes of the contents of 11 bottles of cough syrup. Assume the sample is taken from a normally distributed population. The 90% confidence interval for the population standard deviation sigma is (0.0203,0.0406). The population standard deviation of the volumes of the bottles' contents should be less than 0.032 fluid ounce. Does the confidence interval for sigma suggest that the variation in the volumes of the bottles' contents is at an acceptable level? Explain your reasoning.