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A public health major wants to estimate the proportion of students that watch network news on...

Question:

A public health major wants to estimate the proportion of students that watch network news on a regular basis. She has no pre
A public health major wants to estimate the proportion of students that watch network news on a regular basis. She has no previous knowledge and doesn't want to guess about this proportion. Assuming the worst-case-scenario, how large of a random sample (n) does she need to take if she wants the estimate to be within 0.07 of the true population value with 90% confidence? On=138 On=139 but 40 should be used On=139 On=138 but 40 should be used

Answers

Here p= 0.5 2= 0.100 za a 1.645 E = 0.07 .: E= 2a, JPCI-P) = 0.07 e 1.645 10.5x0.5 -0.07 n . Un = 1.665 x 10.25 6.07 Dn - Hor

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