Thread: finding the shape,sd and mean

im having trouble finding (basically everything) i cant seem to figure out the problem with the given numbers.

In the problem it says that 39% of housholds have a dog in your city and that you takes a simple random sample of 50 households.


basically wer have to describe the shape, mean, and standard deviation.

i assume the .39 is the population mean and 50 is the sample observtion. i could be all wrong though. help please!

Originally Posted by lunaj

im having trouble finding (basically everything) i cant seem to figure out the problem with the given numbers.

In the problem it says that 39% of housholds have a dog in your city and that you takes a simple random sample of 50 households.


basically wer have to describe the shape, mean, and standard deviation.

i assume the .39 is the population mean and 50 is the sample observtion. i could be all wrong though. help please!

The number of a of households with a dog in a sample of has a binomial distribution , which we know has mean , and a standard deviation of

RonL

thank you so much!

im taking the course online so it keeps getting harder and harder. i dont think we've gone over the binomial thing or how to find a mean the way you did. so far its been given to us or there are multiple numbers and we find the mean.