Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct symbol (u, p, ) for the indicated parameter. The manufacturer of a refrigerator system of a refrigerator system for soda machines produces refrigerators that are supposed to maintain a true mean temperature, , of 43F, ideal for a certain type of soda. The manufacturer of the soda does not agree with the refrigerator manufacturer, and claims he can prove that the true mean temperature is incorrect. OH: =43 H: 43 Oo: 43 H: = 43 OH: 43 H: 43