Understanding Sample Proportions and the Binomial Distribution

[smallso]

Hi,

I am doing a past paper but I am kinda stuck on one of the questions.

These are the answers I have:
2a. 225/260 = 0.8654
2b. 32/260 * 4/32 = 0.01407
2c. 32/260 * 28/32 + 228/260 * 221/228 = 0.9577

Then for 2d, I have no idea what to do. Am i suppose to draw one of those probability distribution table? And what does it mean sample proportion of accurate ZikaCheck result?

Thank you very much.

 

[Jameson]

Hi smallso,

Have you covered the binomial distribution? Usually when we talk about proportions that are related to two outcomes this involves this distribution. Does that sound familiar?