The Gleason Supermarket uses a scale to weigh produce, and errors are normally distributed with a mean

Question:

The Gleason Supermarket uses a scale to weigh produce, and errors are normally distributed with a mean of 0 oz and a standard deviation of 1 oz (The errors can be positive or negative.) One item is randomly selected and weighed. Find the probability that the error is
a. Between 0 and 1.25 oz
b. Greater than 0.50 oz
c. Greater than - 1.08 oz
d. Between - 0.50 oz and 1.50 oz
e. Between - 1.00 oz and - 0.25 oz