12 According to a college survey 22 of all students work ful

12) According to a college survey, 22% of all students work full time. Find the standard deviation for the number of students who work full time in samples of size 16.

Solution

using the aproximation of binomial to normal we will have

SD = srqt ( n*q*p)

STANDARD DEVIATION = SRQT ( 0.22*0.78*16)

SD =1.66