do not use excel

Consider the following hypothesis test: Ho : p = 20 Hi : u # 20 A sample of 200 items will be taken and the population standard deviation is given as O=10. Using =.05, compute the probability of making a Type II error if the population mean is 18. Do NOT use EXCEL ( a) 0.1949 b) 0.8949 c 0.3949 (d) None of the answers are correct e) 0.4949