Question

Round up to the nearest integer) 6: Assume prior studies havo shown that abot 60% offMine students earn bachelor's degreesitiuryearsori Round up to the nearest integer c. Does the added knowledge in part (b) have much of an effect on the samplese O A Yes, using the additional survey information from part (b) dramatically reduces the samplee part (b) dramatically reduces the sample B. No, using the additional survey information from part (b) only slightly reduces the sample size from part (b)only sighty inereasestn angle imi OC. Yes, using the D. No. using the additional survey information from part tb) does not change themle e ock to select your answer(s).

Answer 1

a) p = q = 0.50

E = 0.03

For 95% confidence,z = 1.96

Hence,

Sample size required

$n = (0.50)(0.50)(\frac{1.96}{0.03})^2$

n = 1068

b) p = 0.60, q = 1 - 0.60 = 0.40

E = 0.03

For 95% confidence,z = 1.96

Hence,

Sample size required

$n = (0.60)(0.40)(\frac{1.96}{0.03})^2$

n = 1025

c) Option B is correct.