Stat Question:

Carl Cornfield has been wondering whether he should plant white corn this year. He decides to sample 100 customers. 38% say they would purchase white corn. Carl wants to have a 95% confidence interval for this proportion.

For my answers I got (I think they're correct?)

The estimate is 38%
The reliability factor is 1.96
The Standard error is .05

But I do NOT understand how to get the confidence interval. Can anyone help me?

Question

Stat Question:

Carl Cornfield has been wondering whether he should plant white corn this year. He decides to sample 100 customers. 38% say they would purchase white corn. Carl wants to have a 95% confidence interval for this proportion.


For my answers I got (I think they're correct?)

The estimate is 38%
The reliability factor is 1.96
The Standard error is .05
 
But I do NOT understand how to get the confidence interval. Can anyone help me?

igigighjkl · Answer

"In statistics, a confidence interval (CI) is a type of interval estimate of a population parameter." if you look it up you can find out what it means.