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We will continue with Ch 9 today. The new concept for this lesson is “random variables“. We will focus on “discrete“ random variables first, then “continuous“ random variables.

You will notice that the math is not difficult in this chapter (addition, subtraction, etc.). As a matter of fact, the math is not difficult in this course but it’s the concepts and how you apply those concepts that can be challenging.

 

Instructions

• There is 2 problems in this lab work. To receive full credits, make sure you follow the format shown in the video. Otherwise, your answer will be marked as incomplete.

 

• • #9.13 skip d) (discrete probability distribution)

• • • Note: For #9.13b), in describing the event \( X < 7 \) in words, you need to say what X is in plain English (no math notation or symbol). So your answer should be:

The event “\( X < 7 \) ” means that “the number of …………. is ……”.

You will NOT get full credits if your answer is missing the words “the number of …….“ because those words represent the meaning of X.

 

• • • Note: For #9.13c), you need to answer BOTH of the following:
      • 1. Express the event in terms of X
        2. Find the probability

 

• • problem not in book (uniform probability distribution)

 

• The videos explain the concepts and shows you how to do the lab work:

Ch 9 cont’d—discrete random variables

Ch 9 cont’d—continuous random variables

 

• Submit your lab work as one single PDF file to Canvas before the due date.

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