Question

Please help me with this question:< I will give you a shiny medal :) (statistics)

A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 50 adult Americans and asks them whether or not they support the proposed changes. To say that the distribution of the sample proportion of adults who respond​ yes, is approximately​ normal, how many more adult Americans does the
researcher need to sample in the following​ cases?


​(a) 101% of all adult Americans support the changes
​(b) 15​% of all adult Americans support the changes

Answer 1

So I am unsure what to do, this is statistics, but do I do

Answer 2

@DanJS

Answer 3

do I do np (1-P) ≥ 10?

Answer 4

Im so confused, :( I usually understand, but this time, I have no clue what to do :(