2points
the ideal length of a particular metal rod is 30.5 cm. the measured length
may vary from the ideal length by at most 0.015 cm. what is the range of
acceptable lengths for the rod?
o
a. 30.485 2 x 2 30.515
o
b. 30.485 2 x 5 30 515
o
c. 30485 x 30 515
d. xs 30.485 or x 2 30.515

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?