A machine is filling 30oz bottles of cough medicine. No machine is perfect, so a little bit of variability in volume is acceptable. You decide that a standard deviation of no more than 0.2oz is acceptable. The default assumption is that the machine is working fine, but from time to time, to determine whether the machine might be malfunctioning, you randomly select 45 bottles and measure the volume of cough medicine in them. On one such test, a sample standard deviation of 0.24oz was obtained. At a 5% significance level, conduct the appropriate hypothesis test to determine if the machine is malfunctioning. What would your conclusion be at 1% significance
A machine is filling 30oz bottles of cough medicine. No machine is perfect, so a little bit of variability in volume is acceptable. You decide that a standard deviation of no more than 0.2oz is acceptable. The default assumption is that the machine is working fine, but from time to time, to determine whether the machine might be malfunctioning, you randomly select 45 bottles and measure the volume of cough medicine in them. On one such test, a sample standard deviation of 0.24oz was obtained. At a 5% significance level, conduct the appropriate hypothesis test to determine if the machine is malfunctioning. What would your conclusion be at 1% significance?
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Hello. When doing the first calculation for the Test statistic i am getting a final answer of 44 not 63.36 using excel. Is there a reason for this?
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