Probability Help... Did I do this correctly?

Did I do this stuff correctly?





The table below shows the number of tests taken by 30 randomly selected college sophomores





Number of test taken to Students





0 to 12


1 to 8


2 to 2


3 to 3


4 or more to 5








If a student is selected at random, find the probability


a)the student has taken exactly two tests


2/30


b)the student has taken at least two tests


10/30


c)the student has taken at most three tests


25/30


d)the student has taken 3 or fewer tests


25/30





e)the student has taken one or two tests.


10/30

Probability Help... Did I do this correctly?
All correct. Good job.
Reply:If I am reading this right,


A 2/30 2have taken 2tests


B 10/30 10 have taken AT LEAST 2 tests


C 25/30 at most 25 tests


D same as C


E 10/30 (8+2) 1 or 2 tests





Correct to me