A manufacturer orders 30 mm nuts for a new line of machines from a supplier. In a quality control study the manufacturer tests 28 nuts and found mean...

A manufacturer orders 30 mm nuts for a new line of machines from a supplier. In a quality control study the manufacturer tests 28 nuts and found mean diameter and standard deviation were 29.8 mm and 0.5 mm respectively. Is there enough evidence to say there the nuts are not according to specifications. Use a=0.01

1.Identify the parameter(s)

2.Null Hypothesis

3.Alternative Hypothesis

4.Test Statistics

5.Rejection Region or p-value

6.Conclusion

Really?