If the base rate of the disease X is 43%, If a random sample of 75 people were surveyed, what is the probability that the proportion of the sample who have the disease X is between 45% and 50%? what is the probability we would fmd more than 50% of people having disease X? Hint: Sampling Distribution of the Sample Proportion. First, check if the distribution of the sample proportion approximates a normal distribution. Second, calculate the normal distribution parameter of p\". Then calculate Pg?) for 0.45 0.5 using Z value