S1 AQA Question HELP

I can try and help you understand the binomial and normal distributions. Confidence intervals aren't part of my Maths spec so I can't help you there.
What is puzzling you about the binomial and normal distributions?

basically i know how to find the values in the back of the book more than less than
and for exactly you need to use the nCr buttons i think
for confidence interval isnt there loads of formulas involved including estimation and standard errors
when it asks for random samples and stuff centeral limit theorem dont rly know any of this im confused on which formula to use for what wording

so, when you have a random sample, we normally assume that it is a normal distribution
you can go from binomial to normal or poisson to normal

binomial is a discrete distribution and normal is a continuous distribution so you have to employ a continuity correction when you're going from binomial to normal
- when you're going from binomial to normal, there are also certain conditions that have to be fulfilled first, ie. np>5 and nq>5
- when you're going from binomial to a normally distributed RANDOM SAMPLE , the value of X is + or - 1/(2n) depending on what the question is asking you

poisson is also a discrete distribution so the above applies, except for the fact that lamda must be greater than 15

when going from a normal distribution to a normally distributed random sample, you employ the Central Limit Theorem, on the condition that n>30

so, when you have a random sample, we normally assume that it is a normal distribution
you can go from binomial to normal or poisson to normal

binomial is a discrete distribution and normal is a continuous distribution so you have to employ a continuity correction when you're going from binomial to normal
- when you're going from binomial to normal, there are also certain conditions that have to be fulfilled first, ie. np>5 and nq>5
- when you're going from binomial to a normally distributed RANDOM SAMPLE , the value of X is + or - 1/(2n) depending on what the question is asking you

poisson is also a discrete distribution so the above applies, except for the fact that lamda must be greater than 15

when going from a normal distribution to a normally distributed random sample, you employ the Central Limit Theorem, on the condition that n>30

In a normal distrubution when it gives you the Z values the standard deviation and n how do you calculate the Mean do u do inverse norm or something