Question 10 options a 05625 06337 b 04375 06337 c 04375 0

Question 10 options:

a)	0.5625 ± 0.6337

b)	0.4375 ± 0.6337

c)	0.4375 ± 0.0202

d)	0.5625 ± 0.0202

d. is the answer i.e 2250/4000 = p

E= z*sqrt(p(1-p)/n)

where z= 2.58 for 99% confidence interval N = 4000