Problem
For males in a certain town, the systolic blood pressure is normally distributed with mean of 105 and a standard deviation of 7 . If 166 males from the town are randomly selected to participate in a study, how many of them would be expected to have a systolic blood pressure between 89 and 110, to the nearest whole number?
Solution
Step 1 ：Step 1: Calculate the Z-scores for the given range (89, 110)
Step 2 ：Step 2: Find the probability between the Z-scores using the Z-table
Step 3 ：Step 3: Multiply the probability by the number of males (166)
