The formula to calculate the minimal sample size, n, to obtain some maximal margin of error is Select one: O A ( za/ 20 YE ) 2 O B. Zazz(a/ Vn) OC za/20 /E O D. Vnpq O E E/ ( za/2) 2 Provide an appropriate response. The standard IQ test has a mean of 96 and a standard deviation of 17. We want to be 98% certain that we are within 4 IQ points of the true mean. Determine the required sample size. Select one: O A. 195 O B. 99 OC 1 O D. 10