A New York Times article about poll results states, "In theory, in 19 cases out of 20, the results from such a poll should differ by no more than one percentage point in either direction from what would have been obtained by interviewing all voters in the United States." Find the sample size suggested by this statement.© BrainMass Inc. brainmass.com June 18, 2018, 5:16 pm ad1c9bdddf
We take p = 0.5. Therefore q = 1 - p = 0.5
19 out of 20 is (19/20) * 100 = ...
Neat, step-by-step solution is provided.