D Question 23 1 pts Part 5: The researchers calculate a 90% confidence interval for the regression slope to be (0.47, 0.73). What is the best way to interpret this interval? O We are 90% confident that the sample regression slope lies between 0.47 and 0.73 O 90% of students scored between 47% and 73% on their aptitude test. We are 90% confident that the true regression slope lies between 0.47 and 0.73 O There is a 90% chance the true regression slope lies between 0.47 and 0.73.