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. Caught warning in the question code: Division by zero on line 14 to file /var/app/current /assess2/questions/ QuestionHtmlGenerator.php[199] : eval()d code A machine fills bottles with 64 ounces of liquid. The quality-control manager determines that the fill levels are normally distributed with a mean of 64 ounces and a standard deviation of 0.42 ounce. He has an engineering recalibration machine in attempt to lower the standard deviation. After recalibration, the quality-control manager randomly selects 19 bottles from the line and determines that the standard deviation is 0.38 ounce. Is there less variability in the filling machine? Use c = 0.1. The null and alternative hypothesis would be: Ho: u = 64 Ho: / = 0.38 Ho:0 = 64 HQ:0 =0.38 Ho:0 = 0.42 Hi:u > 64 H1 :u