The manager should stop production to set the machine to fill the bags more.
Since the sample mean (2.38 lbs) is less than the expected mean (2.5 lbs), it suggests that the bags are being underfilled by the filling machine. The calculated t-value of -1.247 is less than the critical t-value of -1.703 (with 26 degrees of freedom and a significance level of 0.05). This means that we fail to reject the null hypothesis that the bags are being filled at the correct weight. However, since the sample mean is significantly lower than the expected mean, the manager should take action and adjust the filling machine to fill the bags more to meet the expected weight.
14. A factory makes pretzels. Each mega-size bag of pretzels should weigh 2.5 lbs. The manager suspects the
filling machine has been underfilling the bags. She randomly selects 27 bags and weighs them,
calculating a sample mean of 2.38 lbs. with a sample standard deviation of 0.5 lbs. She performs a
significance test using a significance level of a =0.05 and calculates a t-value of -1.247 Recommend
a strategic decision for the factory manager.
(1 point)
The manager should keep the filling machine running without changes.
The manager should stop production to set the machine to fill the bags more.
The manager should stop production to set the machine to fill the bags less.
The manager should change the size of the bag to match the amount the machine dispenses
1 answer