Answer
$μ=64.05~ounces$ lies outside the confidence interval: null hypothesis is rejected.
There is enough evidence to conclude that the assembly line should be shut down so that the machine can be recalibrated.
Work Step by Step
$H_0: μ=64.05$ versus $H_1: μ\ne64.05$
Enter the data from Problem 24 in C1
Select Stat -> Basic Statistics -> 1-Sample t
Select "One or more samples, each in a column". In the box above enter C1.
Click Options and enter the level of confidence 95%. Click OK.
Click OK.
$Lower~Bound=63.9875$
$Upper~Bound=64.0271$
Since $μ\gt Upper~Bound$, we reject the null hypothesis.
