Approximately 20% of all babies are delivered by Caesarian section. If 40 births are selected at random, find the mean and standard deviation of the resulting probability distribution. (x: Number of babies delivered by Caesarian section)
Standard Deviation = _________
2006-08-09 04:08:50 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help
if u do a fraction: ?/40 = 20/100.
i think u would do: 40 * 20, and that answer divided by 100. u would get 8. yay! it worked!
i no im rite b/c if u did 40/? = 20/100, u would get the answer: 200. that doesnt make sense, b/c there is only 40 births to begin with.
this isn't distribution and probability, but it was worth a guess.
2006-08-09 04:25:17 · answer #1 · answered by agalicktourq 4 · 0⤊ 0⤋
Look. I have a dozen (ten, anyway) textbooks on statistics, none of which I have looked at since 1972. I am not going upstairs to look at them now. But I know the answer is right there, and it's probably on the Internet too.
But I don't do homework problems for slothful pupils.
2006-08-09 04:13:29 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Having taken various college point information courses, i might tend to question any statistical outcomes published everywhere. there are such different vairables that for the main area, information are beside the point in serving as an precise predictor of loads of something. BB, Raji the eco-friendly Witch
2016-11-04 05:06:55 · answer #3 · answered by ? 4 · 0⤊ 0⤋
You need an actual sample to find the deviation for your question. I am too lazy to look up the formula.
2006-08-09 04:14:18 · answer #4 · answered by BigPappa 5 · 0⤊ 0⤋