Independent Probability |
#1 |
What is the probability of rolling a 6 and then rolling a 2 on a six sided number cube? |
1/6 x 1/6 = 1/36 |
#2 |
A bowl holds 10 jelly beans. 5 are red and 5 are purple. What is the probability of choosing a purple, putting it back and then choosing a red? |
5/10 x 5/10 = 25/100 = 1/4 |
#3 |
What is the probability of spinning a green on a three sectioned spinner with red, blue, and green sections, and then spinning a blue? |
1/3 x 1/3 =1/9 |
#4 |
What is the probability of flipping a coin and landing on heads, and rolling a six sided number cube and rolling a 1? |
1/2 x 1/6 = 1/12 |
#5 |
What is the probability of picking a blue crayon from a box of 12 different colors, putting it back and next choosing a yellow? |
1/12 x 1/12 = 1/144 |
Dependent Probability |
#1 |
What is the probability of choosing strawberry ice cream when offered chocolate, vanilla, or strawberry, eating your first choice, and then choosing chocolate? |
1/3 x 1/2 = 1/6 |
#2 |
What is the probability of choosing a white sock from a drawer of socks that contain 6 white socks and 4 blue socks, putting it on your foot and then choosing another white sock? |
6/10 x 5/9 = 30/90= 1/3 |
#3 |
What is the probability of choosing a sharpened pencil out of a pack of 4 sharpened and 2 unsharpened pencils , and then choosing an unsharpened pencil? |
4/6 x 2/5 = 8/30 = 4/15 |
#4 |
There are 5 cookies, 2 candy bars, and 3 bags of chips in the pantry. What is the probability you choose a candy bar, eat it up, and then choose a cookie? |
2/10 x 5/9 = 10/90 = 1/9 |
#5 |
What is the probability of choosing an even numbered card from ten cards numbered one through ten, throwing it away, and choosing an odd numbered card next? |
5/10 x 5/9= 25/90 = 5/18 |
Dependent or Independent? |
#1 |
Take a cookie, eat it, and take another. |
Dependent |
#2 |
Grab a sock, put it on, grab another. |
Dependent |
#3 |
Roll a dice and spin a spinner. |
Independent |
#4 |
Choose a card from a deck and then choose another after replacing the first card. |
Independent |
#5 |
Grab a crayon, break it and throw it away, and then grab another crayon. |
Dependent |