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. Find the approximate probability that more than 17 and less than 26 of the sampled students had at least one tattoo.
A) 0.2422
B) 0.4222
C) 0.1800
D) 0.6644

Question

Quizplus · Accepted Answer

Using the normal approximation to the binomial distribution, the mean is 20 and the standard deviation is approximately 3.87. The probability of having more than 17 and less than 26 students with tattoos is approximately 0.6644.

A Study of College Students Stated That 25% of All