My teacher loves setting us questions that you actually have to think about

I have to find P (O|M) - Estimate the probability that a male recruit drawn at random from the population is overweight

O = overweight and M = Male
Being overweight means BMI > 25 (Body mass index)

There are 30 people in my population data - 18 males and 12 females.
I have been given a sample size of 10 people.
I have full access to my sample data

However I only have access to gender data for population.

I know that probability of being Male = 0.6

So i need to make an estimate of the probability of being overweight in the population based on my smaller sample size.

Pretty sure you can't do this without an idea on the probability of any one person, or one male being overweight. I know that sounds similar to what you're trying to find, but how are you suppose to estimate whether someone will be overweight solely based on their gender? You can't unless you have some information on the frequency of overweight people in the population.

He has information on frequency of overweight in his sample of 1/3 of the population.

yeah i have to make the assumption that the sample represents the population

or use the variance from the sample somehow (since i can convert it to population since i know both numbers)

either way I am still confused... maybe i also need to graph the sample and then make an assumption of whether or not it looks like its normally distributed?


i get marked on it today - think ill just use the probability from the sample and go for part credit lol

This post was edited by Branket on May 21 2014 08:21pm

Where?

Idk

Same