Question 473140: A class is collecting data on eye color and gender. They organize the data they collected into the table below. Numbers in the table represent the number of students from the class that belong to each of the ctegories. Express probabilities as simplifed fractions.
brown blue green
Male 22 18 10
Female 18 20 12
Find the probablity that a randomly selected studen from this clas
a. doesnt have brown eyes
b. has brown eyes or blue eyes
c. is female or has green eyes
d. is male, given the student has blue eyes
e. If two people are randomly,selected, in succession, from the students in this class, find the probablity that they both have green eyes?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A class is collecting data on eye color and gender. They organize the data they collected into the table below. Numbers in the table represent the number of students from the class that belong to each of the ctegories. Express probabilities as simplifed fractions.
brown blue green..Total
Male 22 18 10.....50
Female 18 20 12.....50
Total...40....38...22....100
----------------------------
Find the probablity that a randomly selected studen from this class
a. doesnt have brown eyes:: 60/100
------------
b. has brown eyes or blue eyes:: 62/100
------------
c. is female or has green eyes::(50+22-12)/100 = 60/100
---------------
d. is male, given the student has blue eyes::10/22
---------------
e. If two people are randomly,selected, in succession, from the students in this class, find the probablity that they both have green eyes?::
22C2/100C2 = 231/4950 = 0.0467
===================================
Cheers,
Stan H.
==================
|
|
|
