Interpret calculator display: The following TI-84 Plus calculator display presents a 95% confidence interval for the mean difference between matched pairs.

a. Find the point estimate of Pd.
b. How many degrees of freedom are there?
c. Fill in the blanks: We are 959 confident that the mean difference is between and____

Transcribed Image Text:

(7.7632, 9. 3028) 5x-1.548 n-18