Algebra 1 - MathnMind

2-6
NAME ______________________________________________ DATE ____________ PERIOD _____
Practice
Probability: Simple Probability and Odds
One chip is randomly selected from a jar containing 13 blue chips, 8 yellow chips,
15 brown chips, and 6 green chips. Find each probability.
1. P(brown) 2. P(green)
3. P(blue or yellow) 4. P(not yellow)
A card is selected at random from a standard deck of 52 cards. Find each
probability.
5. P(heart) 6. P(black card)
7. P(jack) 8. P(red jack)
Two dice are rolled and their sum is recorded. Find each probability.
9. P(sum less than 6) 10. P(sum less than 2)
11. P(sum greater than 10) 12. P(sum greater than 9)
Find the odds of each outcome if a computer randomly picks a letter in the name
The Badlands of North Dakota.
13. the letter d 14. the letter a
15. the letter h 16. a consonant
CLASS PROJECTS For Exercises 17–20, use the following information.
Students in a biology class can choose a semester project from the following list: animal
behavior (4), cellular processes (2), ecology (6), health (7), and physiology (3). Find each of
the odds if a student selects a topic at random.
17. the topic is ecology
18. the topic is animal behavior
19. the topic is not cellular processes
20. the topic is not health
SCHOOL ISSUES For Exercises 21 and 22, use the following information.
A news team surveyed students in grades 9–12 on whether to
change the time school begins. One student will be selected at
Grade 9 10 11 12
random to be interviewed on the evening news. The table gives No change 6 2 5 3
the results.
21. What is the probability the student selected will be in the
9th grade?
Hour later 10 7 9 8
22. What are the odds the student selected wants no change?
© Glencoe/McGraw-Hill 108 Glencoe Algebra 1