Hannah, the point estimate is p-hat, which lies right smack in the middle of the confidence interval. This is because, in order to form the confidence interval, you start with p-hat and add and subtract the margin of error from it. So, if you have the confidence interval, you can find p-hat from it... How? By finding the middle...you can add the two numbers on the confidence interval and divide by 2... For example, if the confidence interval was (5.4,6.8), then the point estimate is p-hat = (5.4+6.8)/2 = 12.2/2 = 6.1. Hope this helps!
what would you do if you needed to find the point estimate and you were given the confidence interval as well as the sample size (given lower and upper bounds as well as p but not x)
Thank you for making this easier to understand!
Hannah, the point estimate is p-hat, which lies right smack in the middle of the confidence interval. This is because, in order to form the confidence interval, you start with p-hat and add and subtract the margin of error from it. So, if you have the confidence interval, you can find p-hat from it...
How? By finding the middle...you can add the two numbers on the confidence interval and divide by 2...
For example, if the confidence interval was (5.4,6.8), then the point estimate is p-hat = (5.4+6.8)/2 = 12.2/2 = 6.1.
Hope this helps!
what would you do if you needed to find the point estimate and you were given the confidence interval as well as the sample size (given lower and upper bounds as well as p but not x)
Great explanation!
Is that me talking?
Thank you!
I liked your video but your mic caused ringing in my headset at times.