Math 1530 Spring 2017 T&TH; (12.15.1 12) S11 Test: Practice Test 3 (Copy) This Q

Question

Math 1530 Spring 2017 T&TH; (12.15.1 12) S11 Test: Practice Test 3 (Copy) This Question: 1 pt Use the sample data and contoence levelgiven bekwto comokte patsuotvoug w research sinde pol asked responserns eney actesso annoy abadower in me pol n zear and .11m to sadthat they torked use a sos contoence lever En the conto view a tab otzscores Round to tour decanal plates as needed c Construct the contidence interva Round three decima paces needed D. One has on connaerce sample proporton equato ne popula on proportion to select your an

Explanation / Answer

a) here point estimate p=1179/2627 =0.449 ; also n=2627

hence std error =(p(1-p)/n)1/2 =0.0097

for 90% CI, z=1.645

b)hence margin of error =z*std error =0.0160

c) confidence inteval =point estimate -/+ margin of error =0.433 ; 0.465

d)option B is correct

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