Probability based on normal distribution.
1. Determine the area under the standard normal curve that lies to the left of z = - 3.49 .
2. Determine the area under the standard normal curve to the left of z = - 2.94 or to the right of z = 2.94
3. Find the value of Z 0.15
4. Suppose a simple random sample of size n=36 is obtained from a population with µ=64 and σ= 18. What is x'P( <62.6)