Applications with Standard Normal Distribution Answers

For a standard normal distribution, which of the following variables always equals 0?

What is the approximate area of the unshaded region under the standard normal curve below? Use the portion of the standard normal table given to help answer the question. z Probability0.000.50001.000.84132.000.97723.000.9987

For a standard normal distribution, if , what is the value of ?

What is the approximate area of the shaded region under the standard normal curve below? Use the portion of the standard normal table given to help answer the question. zProbability0.000.50001.000.84132.000.97723.000.9987