A computer company wants to determine the proportion of defective computer chips from a day's production. A quality control specialist takes a random sample of 100 chips from the day's production and determines that there
are 12 defective chips. Assuming all conditions are met, he constructs a 95% confidence interval for the true
proportion of defective chips from a day's production. What are the calculations for this interval?
12 +1.65)
12(1-12)
100
O 12 +1.964
12(1-12)
100
0.0.12 +1.65
0.12(1-0.12)
100
0.12(1 -0.12)
O 0.12 +1.967
100