The abc steel company manufactures steel bars. WHen the production process is working correctly, it turns out steel bars with an average length of at least 2.8 feet with a standard deviation of .2 foot. LOnger steel bars can be used or altered, but shorter bars must be scrapped. A sample of 25 bars is selected from the production. THe sample indicates an average length of 2.73 feet. the company wishes to determine if the production equipment needs an immediate adjustment. b. if the company uses a .05 level of significance and using the critical value (t value) approach to hypothesis testing would you reject of null hypothesis