Fill in the Blanks by Standardizing the Normally Distributed Variable

question 128

Multiple Choice

Fill in the blanks by standardizing the normally distributed variable.
-The amount of time that customers wait in line during peak hours at one bank is normally distributed with a mean of 13 minutes and a standard deviation of 3 minutes. The percentage of Time that the waiting time lies between 11 and 13 minutes is equal to the area under the standard
Normal curve between ___ and ___.

• A)-2, 0
• B)0.62, 0.77
• C)0, 0.67
• D)-0.67, 0