Question

which is a discrete random variable?
o y = \height of an emperor penguin on antarctica\
o z =
esults of flipping two coins\
o w = \exact time it takes for a computer to update its software\
o x = \weight of the microprocessor inside your computer\

Explanation:

Step1: Define discrete random variable

A discrete random variable has a countable number of possible values.

Step2: Analyze option X

Weight of a micro - processor is a continuous variable as it can take any value in an interval.

Step3: Analyze option W

Exact time for software update is a continuous variable as time is continuous.

Step4: Analyze option Y

Height of a penguin is a continuous variable as height can take any value in a range.

Step5: Analyze option Z

Results of flipping two coins can be {HH, HT, TH, TT}, which is a countable set of outcomes, so it is a discrete random variable.

Answer:

C. Z = "results of flipping two coins"