One-Sample t-Test for TI-83 & TI-84

[@DrivenDigitalArts]

I love this lady, I was ready to eat my gun trying to solve this problem, MAN I HATE THESE CALCULATORS. So easy to understand and follow along, thank you!

[@bunnybabybevytv6434]

to the point and well spoken. thank you

[@darthricius9525]

you're a life saver! thanks

[@CovetAmory]

That was really cool; thank you! I really learned a lot!

[@briennawells5347]

How did you get alpha 0.05?? What does alpha stand for? My instructor doesnt use alpha.

[@OpenIntroOrg]

Alpha is the symbol used for the "significance level", which is the value that the p-value is compared to for determining whether the data provide statistically significant results against the null hypothesis (H_0) in favor of the alternative hypothesis (H_A). More info can be found in one of our textbooks (free to download), such as: - Section 5.3 of OpenIntro Statistics (openintro.org/book/os) - Section 5.3 of Advanced High School Statistics (openintro.org/book/ahss)

[@p90p90]

If I could reach out and hug you! YOU are the BEST! thank you thank you!

[@Leo-db6mi]

really greate video!

[@andrewsaputo1689]

Why at least 30?

[@OpenIntroOrg]

This is better covered in the theory video regarding when the normal approximation is reasonable for most situations: kzbin.info/www/bejne/oqSmlJKmiJiCaJo For a much more detailed explanation, you can download one of our textbooks (the PDFs are free): www.openintro.org/book/ahss www.openintro.org/book/os

[@gailsims9514]

It is a requirement of normality. If the original population is not itself normally distributed, then the condition 'n is greater than 30' is used for justifying the use of normal distribution.

[@Alexaareneee]

who does the voice for these videos?