I need the sample size of a known population of 1,692,500 with confidence interval of 95% or 1.96, error margin of 0.05. Using any formula.

If i have 20$ and i gave 5$ away how much i got

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

Select the number of ways in which a line and a circle can intersect