What percentage of observations have scores between 2.24 and 2.24

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?

10 points? me . its important ‼️‼️