Confidence Interval for Diet 1 Mean

[Maybe_Memorie]

Homework Statement

There's no need to write out the full question, but basically we have 6 diets, and for each one a list of the levels of protein in 10 independant samples for each. Sample mean and standard deviation given.

Calculate and interpret a confidence interval centered on the sample mean for diet one.

Homework Equations

The Attempt at a Solution

The sample mean for diet 1 is 100, SD is 15.1

When it says a confidence interval centered on this, do i just calculate

100+-t*(15.1)/root(10) where t* is the critical value obtained using a t distribution with n-1 = 9 degrees of freedom?

 

[LightHero]

So the CI will be 83.70 to 116.30? This means we can be 95% confident that the true mean of the population for this diet lies between these two numbers.