Textbook ExpertVerified Tutor
25 Oct 2021
Given information
Given that Ellen has music practice three days a week. She practices for all of the three days 85% of the time, two days 8% of the time, one day 4% of the time, and no days 3% of the time. One week is selected at random.
The main objective is to define the random variable X.
Step-by-step explanation
Step 1.
The definition of the random variable states that it is a varible that gives or define a numerical value of an outcome of an experiment.
Accoding to this problem, the random variable can be defined as the number of days that Ellen has a music practice in a week.
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