A Company Has a Contract to Supply Specialized Batteries to a Manufacturer

Multiple Choice

A company has a contract to supply specialized batteries to a manufacturer with a mean width of 54mm and a standard deviation of 1.5 or less with an alpha of 0.10.The company randomly tests 25 of these batteries to ensure that they are meeting the requirements of the contract.If the most recent test had a standard deviation of 1.8 what would be the critical value of this chi-squared test?

A) -33.196
B) 36.415
C) 1.645
D) 33.196
E) 1.282