A book club recorded the number of books read by its four members last month: 5, 7, 6, and 8. This month, a new member joined and read 4 books. Which of the following statements correctly compares the mean number of books read by the original four members to the mean number of books read by all five members?
The mean for the original four members is greater than the mean for all five members.
The mean for the original four members is less than the mean for all five members.
The means for both groups of members are equal.
There is not enough information to compare the means.
