MEq/L lower and upper limit

Discussion

You must be signed in to discuss.

Video Transcript

to construct a 95% confidence interval. We're going to be using this formula where the X bar is the sample mean? Which in this case is one oh one, The sigma, the population standard deviation is 39 And and our sample size is 80 And then the only thing we don't know here, but we can reference the critical value for 95% confidence is 1.96. So the first thing I'll do is calculate the margin of error, the right side of the plus or minus sign and that's going to come out to be 8.546. And now to get our interval we're going to do 101 -8.546 Which is 92.454 And 101 plus 8.546 will make 109 .546. And then your directions say here round to one decimal place for your lower in your upper. So the lower value Is going to be 92.5 And the upper value is gonna be 109.5.

Did you know?

Numerade has step-by-step video solutions, matched directly to more than +2,000 textbooks.

Find Your Textbook