How does the length of a movie sequel compare to the length of the original movie, on average? A sample of 40 movies and their first sequel was taken, and the length (in minutes) of the movies were recorded. a girl starts analyzing the data and comes to you with some questions that came up during the analysis.

a) A girl started this problem by writing a definition for the parameter, but she couldn't remember what to put in the blank. Complete the following statement:

?d? is the ____ for the lengths of movies for first sequels and their corresponding original movie (sequel - original).

population mean of differences

sample mean of differences

population of differences

sample of differences

difference of population means

difference of sample means

b) Again, a girl started to write the assumption that is being checked with this QQ plot, but she isn't sure what to use to complete the following statement:

The ____ are Normally distributed.

population mean of differences

sample mean of differences

population of differences

sample of differences

difference of population means

difference of sample means

We can assume that our 40 movie pairs are a random sample of all such movie pairs. Mina generated the following plot. Normal Q-Q Plot O O ooo Sample Quantiles O -20 -10 O O O -2 -1 0 2 Theoretical QuantilesMina provides the following R output with a 95% confidence interval for / that ranges between about 1.09 minutes to about 9.76 minutes. One Sample t-test data: movies$diff t = 2.5302, df = 39, p-value = 0.01555 alternative hypothesis: true mean is not equal to 0 95 percent confidence interval: 1. 088089 9. 761911