This post has been de-listed
It is no longer included in search results and normal feeds (front page, hot posts, subreddit posts, etc). It remains visible only via the author's post history.
1
Statistics Help!
Post Body
I'm trying to find the 68.26% confidence interval of the percentage of 40.8% who voted yes in a random sample of 1195.
My thinking was, 68.26% confidence level means the Z score is 1.00.
and then the p -z√(p(1-p)/n becomes 0.408 -1√0.408(1-0.408)/1195 which I get to simply to =0.4084 -=0.4075
However, the answers are listed as [0.3938,0.4222]
Could anyone explain where I've been going wrong? I'd greatly appreciate it
Author
Account Strength
50%
Account Age
5 years
Verified Email
No
Verified Flair
No
Total Karma
139
Link Karma
83
Comment Karma
56
Profile updated: 1 day ago
Posts updated: 1 year ago
Subreddit
Post Details
We try to extract some basic information from the post title. This is not
always successful or accurate, please use your best judgement and compare
these values to the post title and body for confirmation.
- Posted
- 1 year ago
- Reddit URL
- View post on reddit.com
- External URL
- reddit.com/r/MathHelp/co...