Normal probability distribution The number of personal messages sent by the workers data on a daily basis at a certain company is typically distributed, with a mean of 150 and a standard deviation of...

Extracted text: Normal probability distribution The number of personal messages sent by the workers data on a daily basis at a certain company is typically distributed, with a mean of 150 and a standard deviation of 50. a. What is the 7th decile daily personal messaging frequency? b. What is the first quartile daily personal messaging frequency? c. What is the IIQR of daily personal messaging frequency?