Suppose that past history shows that 60% of college students prefer coca-cola. A sample of 10 students is to be selected. Which of the following distributions would you use to figure out the probability that at least half of them will prefer coca-cola?
A) normal distribution
B) uniform distribution
C) Poisson distribution
D) binomial distribution

Question

Quizplus · Accepted Answer

The question involves a probability distribution for a categorical variable (preference for coca-cola). The binomial distribution is used for a fixed number of independent trials with two possible outcomes (success or failure), which is the case when selecting a sample of 10 students who either prefer or do not prefer coca-cola. Therefore, the binomial distribution is the best choice for this question.

Suppose That Past History Shows That 60% of College Students