posted by Kim .
Find the 98% confidence interval for estimating ìd based on these paired data and assuming normality. (Give your answers correct to one decimal place.)
You'll need to start by finding a confidence interval for 2 samples.
Here is one you might be able to use:
CI = (mean difference) ± t-value (standard deviation difference/√n)
You will need to calculate the means and standard deviations.
T-value is found using a t-table for 98% confidence.
n = sample size
Once you have the interval calculated, you will have the lower and upper limits.