A study of college students stated that 25% of all college students have at least one tattoo. In a random sample of 80 college students, let x be the number of the students that have at least one tattoo. Can the normal approximation be used to estimate the binomial distribution in this problem?
A) Yes
B) No

Question

Quizplus · Accepted Answer

The normal approximation can be used if both np and n(1-p) are greater than 5. Here, np = 80 * 0.25 = 20 and n(1-p) = 80 * 0.75 = 60, both of which are greater than 5.

A Study of College Students Stated That 25% of All