math Study guide

I need help. I got all of these questions out of 50 wrong. 6-10 were not given.

1. Which of the following is an example of independent events?

A-rolling a number cube and flipping a coin
B-drawing marbles from a bag without replacement after each draw
C-choosing members of a team from a group of 10 kids

2. Which of the following is an example of independent events?

A-selecting letter tiles from a bag without replacement
B-flipping a coin three times in a row
C-selecting one piece of fruit from a bag and eating it and then selecting another piece of fruit

3. Which of the following is an example of independent events?
A-selecting a coin from your pocket and spending it and then selecting another coin
B-a teacher selecting students’ names from a hat without replacement
C-selecting letter tiles from a bag with replacement

4. Which of the following is NOT an example of independent events?

A-spinning a spinner and rolling a number cube
B-drawing marbles from a bag with replacement
C-drawing cards from a deck without replacement

5. Which of the following is NOT an example of independent events?

5. Which of the following is NOT an example of independent events? (1 point)

A-spinning a spinner twice
B-selecting a piece of candy and eating it and then selecting another
C-selecting a letter tile from a pile, replacing it, and then selecting another tile from the pile

6. A coin is flipped twice. What is P(H, then T)? (1 point)

7. A coin is flipped, and a number cube is rolled. What is P(T, then odd)? (1 point)

8. A bag contains 7 red marbles, 6 green marbles, 5 yellow marbles, and 2 orange marbles. Marbles are drawn twice with replacement.
What is P(yellow, then green)?

9. A coin is tossed, and a number cube is rolled. What is P(H, then prime number)? (1 point)

10. Letter tiles that spell the word HAPPINESS are placed in a bag. A tile is drawn and replaced and then a second tile is drawn. Find P(vowel, then P).

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  1. 1A
    2B
    3C
    4C
    5B
    Whenever there is replacement, then the events do not affect each other. Or, if the events are unrelated, as with dice and spinners, they are independent.

    6: 1/2 * 1/2 = 1/4
    7: 1/2 * 3/6 = 1/4

    8: 20 total marbles, so
    7/20 * 6/20

    9: 1/2 * 3/6 (primes are 2,3,5)

    10: 3 vowels, 2 P's, 9 total, so
    3/9 * 2/9

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  2. 8.3/40

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  3. 1.A
    2.B
    3C
    4C
    5B
    6B
    7A
    8C
    9B
    10A

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  4. I got a 100%

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  5. You should really try and just read the lesson more and check back on things if you do not understand. Going online for connexus answers is CHEATING! Please, everyone stop this or I will tell Gina Witt. :(

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  6. You really should not be looking up the answers your parents trust you that you can do your own school.

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  7. Then why are you here Grace?

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  8. Helper, I got 8/10. Its not graded so Idc, but the real answers are:

    9. A
    10. D

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  9. Actually, 9 is A and 10 is C, but other than that, Helper is correct for Connexus!
    And @Grace
    It's not cheating unless you ask "HEY I NEED THE ANSWERS WHAT ARE THEY?!" because that's obviously cheating. Asking for help on Jiskha isn't cheating, as there are tutors here to help the children learn the stuff.
    If you think it's cheating, you aren't told to come on here.

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  10. 1.A
    2.B
    3.C
    4.C
    5.B
    6.B
    7.A
    8.C
    9.A
    10.C

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  11. Da wae is correct i got 100%

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  12. da wae is the boom this is right
    1.A
    2.B
    3.C
    4.C
    5.B
    6.B
    7.A
    8.C
    9.A
    10.C

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  13. da wae is right thanks da wae

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  14. Da wae

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  15. First of all, Grace and idk, u guys are the ones on this cheating site so stop telling others something u should do yourself! Get over it. We make our own decisions, NOT U!!!!!!!!!!!!!!!

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  16. Yes! I 100% agree with you Kacy!

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  17. Same

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  18. any kid that says this is cheating we don't care we are here because we want to be so lol sorry.

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  19. Thanks dawae

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  20. thnx dae wae

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  21. 1.A
    2.B
    3.C
    4.C
    5.B
    6.B
    7.A
    8.C
    9.A
    10.C
    Correct I promise
    ( ok maybe i just wrote down the other persons answers...)

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  22. Guys.... don't insult these people who are telling you to stop cheating. Please listen before you send hate comments to me. What if THEY are only CHECKING their answers? You just ADMITTED that you come to cheat. Guys, stop! Other people are just checking their answers; not everyone is bad and cheats like you! What are you gonna do at that STAAR test? Stare into space and pray your friends cheat for you?

    -Emerald

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  23. so whos right

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  24. Grace we know we're cheating and it's not that I haven't been reading through the lesson it's that I can't remember anything to save my life so let me cheat and get good grades.

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  25. poggers

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  26. practice:
    1.A
    2.B
    3.C
    4.C
    5.B
    6.B
    7.A
    8.C
    9.A
    10.C
    assement:
    1. a
    2. a
    3. b
    4. b
    5. c
    6. c
    7. a
    8. b
    9. c
    10. a
    No need to thank me

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