4. A random sample of 450 Bilkent students were asked to rate their university (from 1 to 10) according to their perceptions regarding academic facilities of the university. In the random sample, 200 Indicated a rank value more than 6. For those students:
POPULATION PROPROTION : …....................?
CONFIDENCE INTERVAL …............... AND …............?
(a) 0.444
(b) 0.390 and 0.499
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