For a population with blood pressure (BP) that follows a normal distribution with =120 and =15, suppose we randomly sample n=100 individuals from this population. What is the probability that the sample mean of systolic BP obtained from this sample will be between 118 and 122 mmHg?

(It is recommended to first compute the standard error, then compute the Z-scores for 118 and 122, then compute the difference between the cumulative probabilities associated with these two Z-scores)

Enter as a proportion (eg.99) without a + or -sign