Suppose that, among people with the eye disorder papilledema, blind spot sizes (in degrees) follow a distribution with a mean of 7 degrees and a standard deviation of 0.8 degrees. What is the sampling distribution of the average blind spot size x if we use a sample size of 35 individuals with papilledema? OX ~ N(7, 35 O X~ N(7. 0.64 ) 35 O X ~ N(, 0.8) O X ~ N(7, 0.8) O x ~ N(7, 0.64)