1.A manufacturer knows that their items have a normally distributed lifespan, with a mean of 2.7 years, and standard deviation of 0.7 years.

If you randomly purchase one item, what is the probability it will last longer than 4 years?

2.A particular fruit's weights are normally distributed, with a mean of 280 grams and a standard deviation of 40 grams.

If you pick one fruit at random, what is the probability that it will weigh between 170 grams and 397 grams