Question

z-scores are used to determine the ______.

a \tlikelihood of an event

b \tevent

c \trandom variable

d \tnone of the above

Explanation:

Z - scores are related to standard normal distribution. They help in finding the probability (likelihood) of an event occurring by showing how many standard deviations a data point is from the mean. Option b is incorrect as Z - scores don't define an event. Option c is incorrect as Z - scores are not random variables themselves but are used to analyze data related to random variables.

Answer:

a. likelihood of an event