Recent content by yeungmei

Hi, I have no idea of this ±.03 :cry: A population proportion is .40. A simple random sample of size 200 will be taken and the sample proportion 'p' will be used to estimate the population proportion. a. what is the probability that the sample proportion will be within ±.03 of the...

Got it..Thanks ^__^

I thought it said within, so is it just use 10/SD to find?

I studied stat couple years ago, and going back again...here goes... THe time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Assume that the class has students and that the...

I know u-1020 is the average also the centre point of a curve, where i should get o-100 devidied by square root of 75 to find the standard deviation. so for a, should i uses 10 / the calculated SD to find the probability?

Please please help me, i totally forgot about Stat and now i have a question due tomm. The College Board American College Testing Progam reproted a population mean SAT score of U=1020. Assume that the population standard deviation is O-100 a) what is the probability that a random sample...