Try to find a Basic Statistics book to get some formula.
In a bell shape, the middle point is 24 (=800X3%). With the formula, calculate the the value of one standard deviation, and then you can get the probabilities you need.
Haley's Manufacturing makes fishing reels. Unfortunately, 3% of the reels are defective. Haley's has just received and order for 800 reels from massey Sporting Goods. Do u know how to do the following questions?