Instruction 6.2 John Has Two Jobs. for Daytime Work at a Jewellery

question 174

Short Answer

Instruction 6.2
John has two jobs. For daytime work at a jewellery store he is paid $15,000 per month, plus a commission. His monthly commission is normally distributed with mean $10,000 and standard deviation $2,000. At night he works as a waiter, for which his monthly income is normally distributed with mean $1,000 and standard deviation $300. John's income levels from these two sources are independent of each other.
-Referring to Instruction 6.2,for a given month,what is the probability that John's commission from the jewellery store is more than $9,500?

---

Definitions:

Foreign Key

A field in a database table that creates a link between two tables, identifying a row in another table to establish a relationship.

Primary Key

A unique identifier for each record in a database, used to ensure that each row represents a unique instance of the entity modeled by the table.

Secondary Key

A database attribute used for sorting and/or indexing data, which is not the primary key.

Relational Database Model

Data model based on the simple concept of tables in order to capitalize on characteristics of rows and columns of data.