Please help me to answer this questions with solutions thank you in advance

Performance Tash F: Problems: 1. A certain type of storage battery last on the average 3.0 years, with a standard deviation of 0.5 years. Assuming that the batteries are normally distributed, find the probability that a given battery will last less than 2.3 years. 2. If the average height of miniature poodles is 12 inches, with a standard deviation of 1.8 inches, what percentage of miniature poodles exceeds 14 inches in height, assuming that the height follow a normal distribution and can be measured to any desired degree of accuracy? (Hint: To answer performance task E simply follow the solution of the examples given.)