The mean height of a group of students is 65.4 inches. a student joins the group who is 73 inches tall. how does this student’s height affect the mean? a. the new mean height will still be 64.5 inches. b. the new mean height will be greater than 65.4 inches. c. the new mean height will be less than 65.4 inches. d. the new mean height will be 73 inches.

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?