How to Find the Confidence Interval for the Mean with Small Samples and Sigma Unknown. [HD]
Channel:
Subscribers:
4,730
Published on ● Video Link: https://www.youtube.com/watch?v=_NgRbRQhwR8
Questions? Tips? Comments? Like me! Subscribe!
Refer to a sample of 22 households that used an average of 346.2 gallons of water per day, with a standard deviation of 50.5 gallons. Assume the population of household water usage is normally distributed. Calculate the 80% confidence interval.
Other Videos By Mr. Math Expert
Tags:
Math
mathematics
word problem
probability
normal distribution
t score
Sampling Distribution
confidence interval