Q1. Find the area under the standard normal curve from Z= 0 to Z= 0.74.

Q2. Find the area under the standard normal curve to the left of Z= -1.58 and to the right of Z = 2.55.

Q3. Find the area under the standard normal curve to the left of Z= - 1.60 and to the right of Z= 2.55.

Q4. A bottling company uses a filling machine to fill plastic bottles with cola. The bottles are supposed to contain 300 milliliters (ml). In fact, the contents vary according to a normal distribution with a mean of 298 ml and a standard deviation of 3 ml. Calculate the probability that an individual bottle will contain more than 301 ml.